all-in-one privacy solution":["Proton Unlimited — комплексное решение для защиты данных"],"Black Friday":["Черная пятница"],"No ads. Privacy by default.":["Без рекламы. Гарантия конфиденциальности"],"People before profits":["Люди важнее прибыли"],"Security through transparency":["Безопасность, основанная на прозрачности"],"The best Proton Mail ${ BLACK_FRIDAY } deals":["${ BLACK_FRIDAY }: лучшие предложения Proton Mail"],"The world’s only community- supported email service":["Единственный в мире сервис электронной почты с поддержкой сообщества"]},"specialoffer:limited":{"${ hours } hour":["${ hours } час","${ hours } часа","${ hours } часов","${ hours } часа"],"${ hoursLeft }, ${ minutesLeft } and ${ secondsLeft } left":["Осталось ${ hoursLeft }, ${ minutesLeft } и ${ secondsLeft }"],"${ minutes } minute":["${ minutes } минута","${ minutes } минуты","${ minutes } минут","${ minutes } минуты"],"${ seconds } second":["${ seconds } секунда","${ seconds } секунды","${ seconds } секунд","${ seconds } секунды"],"Limited time offer":["Ограниченное по времени предложение"]},"specialoffer:listitem":{"Create multiple addresses":["Создавайте несколько адресов"],"Hide-my-email aliases":["Создавайте алиасы hide-my-email"],"Quickly unsubscribe from newsletters":["С легкостью отменяйте подписку на рассылки"],"Use your own domain name":["Используйте собственное доменное имя"]},"specialoffer:logos":{"As featured in":["О нас в СМИ"]},"specialoffer:metadescription":{"Get an encrypted email that protects your privacy":["Электронная почта, защищающая вашу конфиденциальность"]},"specialoffer:metatitle":{"Proton Mail Black Friday Sale - Up to 40% off":["Черная пятница в Proton Mail: скидки до 40 %"]},"specialoffer:newmetadescription":{"Get up to 40% off Proton Mail subscriptions this Black Friday. Find great deals on our secure end-to-end encrypted email plans.":["Получите Proton Mail со скидкой до 40 %. Не пропустите выгодные предложения на планы безопасной электронной почты, зашифрованной сквозным шифрованием, в честь «черной пятницы»."]},"specialoffer:newmetatitle":{"Proton Mail Black Friday sale | Up to 40% off secure email":["«Черная пятница» в Proton Mail | Скидки до 40 %"]},"specialoffer:note":{"* Billed at ${ TOTAL_SUM } for the first year":["* ${ TOTAL_SUM } за первый год."],"*Billed at ${ TOTAL_SUM } for the first 2 years":["* ${ TOTAL_SUM } за первые два года."],"30-day money-back guarantee":["Гарантия возврата средств в течение 30 дней"],"Billed at ${ TOTAL_SUM } for the first 2 years":["${ TOTAL_SUM } за первые 2 года"],"Billed at ${ TOTAL_SUM } for the first year":["${ TOTAL_SUM } за первый год"],"You save ${ SAVE_SUM }":["Вы экономите ${ SAVE_SUM }."]},"specialoffer:off":{"${ DISCOUNT } off":["–${ DISCOUNT }"],"${ PERCENT_OFF } off":["–${ PERCENT_OFF }"]},"specialoffer:testimonial":{"I love my ProtonMail":["Обожаю ProtonMail!"],"My favorite email service":["Мой любимый сервис электронной почты"],"Thanks Proton for keeping us all safe in the complicated internet universe.":["Спасибо Proton за защиту в запутанном интернет-пространстве."],"You get what you pay for. In the case of big tech, if you pay nothing, you get used. I quit using Gmail and switched to @ProtonMail":["Полностью оправданное вложение денег. Бигтех-компании используют тебя, если ты им не платишь. Поэтому я перешла с Gmail на @ProtonMail."]},"specialoffer:time":{"Days":["дн."],"Hours":["ч."],"Min":["мин."]},"specialoffer:title":{"And much more":["И это еще не всё"],"Make your inbox yours":["Настройка на свой вкус"],"Safe from trackers":["Защита от трекеров"],"Stay organized":["Всё по полочкам"],"Black Friday email deals":["Безопасная почта для покупок в «черную пятницу»"],"Don’t just take our word for it":["Отзывы наших клиентов"],"Our story":["Наша история"],"Transfer your data from Google in one click":["Перенесите данные из Gmail в одно нажатие"]},"specialoffer:tooltip":{"Access blocked content and browse privately. Includes ${ TOTAL_SERVERS }+ servers in ${ TOTAL_COUNTRIES }+ countries, connect up to 10 devices, access worldwide streaming services, malware and ad-blocker, and more.":["Сохраняйте конфиденциальность в Интернете и получайте доступ к заблокированному контенту. Включает ${ TOTAL_SERVERS } серверов более чем в ${ TOTAL_COUNTRIES } странах с возможностью подключения на 10 устройствах, доступ к стриминговым платформам со всего мира, блокировщик рекламы, функцию защиты от вредоносных программ и другие преимущества."],"Easily share your calendar with your family, friends or colleagues, and view external calendars.":["Предоставляйте доступ к календарю родственникам, друзьям и коллегам, а также просматривайте календари других сервисов"],"Includes support for 1 custom email domain, 10 email addresses, 10 hide-my-email aliases, calendar sharing, and more.":["Включает поддержку 1 пользовательского домена, 10 адресов электронной почты, 10 алиасов hide-my-email, совместный доступ к календарю и другие преимущества."],"Includes support for 3 custom email domains, 15 email addresses, unlimited hide-my-email aliases, calendar sharing, and more.":["Включает поддержку трех пользовательских доменов, 15 адресов электронной почты, неограниченного числа алиасов hide-my-email, совместный доступ к календарю и другие преимущества."],"Manage up to 25 calendars, mobile apps, secured with end-to-end encryption, 1-click calendar import from Google, and more.":["До 25 календарей, мобильные приложения, сквозное шифрование, удобный перенос данных из Google Календаря и другие преимущества"]},"Status Banner":{"At the moment we are experiencing issues with the Proton VPN service":["При использовании сервиса Proton VPN могут возникать проблемы"],"Learn more":["Подробнее"]},"Status banner":{"Learn more":["Подробнее"],"Please note that at the moment we are experiencing issues with the ${ issues[0] } service.":["Сейчас при использовании сервиса ${ issues[0] } могут возникать проблемы."],"We are experiencing issues with one or more services at the moment.":["При использовании одного или нескольких сервисов могут возникать проблемы."]},"suggestions":{"Suggestions":["Предложения"]},"Support":{"Sub category":["Подкатегория","Подкатегории","Подкатегорий","Подкатегорий"]},"Support article":{"${ readingTime } min":["${ readingTime } мин.","${ readingTime } мин.","${ readingTime } мин.","${ readingTime } мин."],"Category":["Категория","Категории","Категорий","Категорий"],"Didn’t find what you were looking for?":["Не нашли желаемый контент?"],"General contact":["Общие контакты"],"Get help":["Получить помощь"],"Legal contact":["Контакты юридического отдела"],"Media contact":["Контакты для прессы"],"Partnerships contact":["Контакты по вопросам партнерства"],"Reading":["Чтение"]},"Support categories":{"Browse Proton product support":["Смотреть ресурсы по поддержке продуктов Proton"]},"Support category":{"There is no article in this category yet.":["В этой категории еще нет статей."]},"Support troubleshooting":{"--- Select ---":["— Выбрать —"],"App version":["Версия приложения"],"Browser":["Браузер"],"Check if this helps":["Возможно, нужный ответ найдется здесь"],"Choose a category for your question":["Выберите категорию запроса"],"Choose a product":["Выберите продукт"],"Did this solve your issue ?":["Удалось ли нам решить вашу проблему?"],"Faster assistance is just a few clicks away — please make your selections":["Выберите подходящие варианты. Всего пара нажатий — и вы на шаг ближе к решению проблемы."],"No, contact support":["Нет, связаться со службой поддержки"],"Proton account":["Аккаунт Proton"],"Proton Bridge":["Proton Bridge"],"Proton Calendar":["Proton Calendar"],"Proton Drive":["Proton Drive"],"Proton for Business":["Proton for Business"],"Proton Mail":["Proton Mail"],"Proton Pass":["Proton Pass"],"Proton VPN":["Proton VPN"],"Thank you for your feedback":["Спасибо за отзыв!"],"Troubleshooting":["Устранение неполадок"],"What can we help with ?":["Чем мы можем вам помочь?"],"Yes":["Да"]},"support_modal_search_query":{"Search query":["Поисковый запрос"]},"support_search_button":{"Search":["Найти"]},"support_search_i_am_looking_for":{"I'm looking for":["Я ищу"]},"SupportForm":{"For a faster resolution, please report the issue from the Bridge app: Help > Report a problem.":["Чтобы быстро устранить проблему в приложении Bridge, выберите «Справка» > «Сообщить о проблеме»."],"Information":["Информация"]},"SupportForm:option":{"Account Security":["Безопасность аккаунта"],"Contacts":["Контакты"],"Custom email domain":["Пользовательский домен адреса электронной почты"],"Email delivery and Spam":["Доставка электронных писем и спам"],"Encryption":["Шифрование"],"Login and password":["Имя пользователя и пароль"],"Merge aliases and accounts":["Объединение псевдонимов и аккаунтов"],"Migrate to Proton":["Переход на Proton"],"Notifications":["Уведомления"],"Other":["Другое"],"Plans and billing":["Тарифы и оплата"],"Proton for Business":["Proton for Business"],"Sign up":["Регистрация"],"Storage":["Хранилище"],"Users, addresses, and identities":["Пользователи, адреса и личные данные"]},"SupportForm:optionIntro":{"Select a topic":["Выберите тему"]},"swiss_baseed_feature":{"Swiss based":["В Швейцарии"]},"Testimonial":{"Awards":["Награды"],"Customers":["Клиенты"],"Featured":["Что о нас говорят"],"Go to testimonial source":["Перейти к источнику отзыва"],"Reviews":["Отзывы"],"Videos":["видео."]},"Text":{"Find the plan that's right for you":["Найдите подходящий план"],"If you need help, check out our ${ supportLink }.":["Если вам нужна помощь, перейдите в ${ supportLink }."],"The page you’re looking for might have been removed, or it could be an\nold link.":["Возможно, страница удалена\nили у вас устаревшая ссылка."]},"Title":{"On this page":["На этой странице"],"Related articles":["Статьи по теме"],"Share ${ thisPage }":["Поделиться ${ thisPage }"],"Thank you!":["Спасибо!"],"this page":["этой страницей"]},"Tooltip":{"More information":["Подробнее"]},"tooltip_calendar":{"Create up to 20 custom & shareable encrypted calendars. On top of that, add up to 5 calendars from friends, family, colleagues, and organizations.":["Есть возможность создать до 20 зашифрованных пользовательских календарей и делиться ими с другими людьми, а также добавить до 5 календарей друзей, родственников, коллег и организаций."]},"tooltip_vpn":{"Access blocked content and browse privately. Includes ${ TOTAL_SERVERS }+ servers in ${ TOTAL_COUNTRIES }+ countries, highest VPN speed, ${ TOTAL_VPN_CONNECTIONS } VPN connections, worldwide streaming services, malware and ad-blocker, and more.":["Получайте доступ к заблокированному контенту, просматривайте страницы анонимно и пользуйтесь стриминговыми сервисами со всего мира. Мы предлагаем ${ TOTAL_SERVERS } серверов более чем в ${ TOTAL_COUNTRIES } странах, высочайшую скорость VPN, ${ TOTAL_VPN_CONNECTIONS } VPN-подключений, защиту от вредоносных программ, блокировщик рекламы и многое другое."],"Access blocked content and browse privately. Includes ${ TOTAL_SERVERS }+ servers in ${ TOTAL_COUNTRIES }+ countries, highest VPN speed, 10 VPN connections, worldwide streaming services, malware and ad-blocker, and more.":["Получайте доступ к заблокированному контенту, просматривайте страницы анонимно и пользуйтесь стриминговыми сервисами со всего мира. Мы предлагаем ${ TOTAL_SERVERS } серверов более чем в ${ TOTAL_COUNTRIES } странах, высочайшую скорость VPN, 10 VPN-подключений, защиту от вредоносных программ, блокировщик рекламы и многое другое."]},"version_history_label":{"Version history":["История версий"]},"version_history_tooltip":{"Store up to ${ versionHistoryNumber } versions of each file for up to ${ years } years":["Храните версии каждого файла (до ${ versionHistoryNumber }) не более нескольких лет (${ years })."]},"vpn_features_link":{"View VPN plans":["Посмотреть тарифы VPN"]},"vpn_features_useCase":{"Access blocked content and browse privately":["Доступ к заблокированному контенту и конфиденциальный просмотр веб-страниц"]}}},"unleashApi":"https://account.proton.me/api"};
// We need to import data (the framework context) from the server
// This Astro feature with define:vars works well but creates an inline script
// So we can't directly import the initFramework helper, we have to store the context
window.frameworkContext = frameworkContext;
})();
4 easy ways to protect PDFs with a password | Proton
When you’re emailed an important document, like a completed contract or a bank statement, it usually comes as a PDF. If you’re sending a PDF that contains sensitive information, you should try to prevent it from being accessed by unauthorized parties. There are dozens of ways to protect your PDFs, but not all of them are easy.
This article explains the four simplest ways to password protect a PDF for free on both PC and Mac.
Why protect PDFs with a password?
Adobe invented the PDF, or “Portable Document File”, in the early days of the internet and controlled the format as a proprietary file type until 2008. Now that the PDF is an open standard, there are many apps available to create, manage, and protect PDFs.
PDFs are not secure by default. When you create and share a PDF, anyone can access its contents and metadata. This can be a problem for some use cases. For example, the PDF is one of the preferred formats for handling important documents.
Here are some instances when you might want to protect your PDF with a password:
When sharing PDFs that contain sensitive data, such as contracts, identity documents, or banking information
When storing PDFs on an internal file server that contain sensitive information that not everyone has authorization to access
To prevent someone from altering the contents of the PDF, you can set a password to restrict permissions (though, as we’ll show below, these permissions can be easily bypassed)
When you need to comply with privacy laws, such as HIPAA or GDPR, which require encryption for personal health information
To encrypt a PDF with a digital signature, authenticating that version of the document
How PDF password protection works
All PDF apps provide a built-in method to set a user password and an owner password. While the names sound the same, these two configurations do two very different things.
User passwords encrypt the PDF with 256-bit AES encryption and require the password to open the document. A user password can encrypt either the contents of the document or the contents and the metadata, such as the file size and file name. The user password is also sometimes known as a “document open password”.
Owner passwords do not encrypt the PDF but rather set certain permissions for what can be done with the document, such as printing, editing, and copying. There is no guarantee that another user’s PDF software will respect those restrictions. The owner password is also sometimes called a “permissions password” or “master password”.
A few notes on PDF password security
As we mentioned above, it’s important to notice the difference between a user password and an owner password. Configuring an owner password alone won’t encrypt the document or prevent others from opening it. Only setting a user password will encrypt your PDF.
Second, even if you do set a user password, your PDF security is only as strong as your password. To create a strong password, we recommend using an open-source password manager to generate random strings while securing your password manager with a passphrase that only you know.
Finally, PDFs protected by passwords have been shown to be vulnerable to attacks. Security researchers in 2019 discovered that the encryption methods of 27 of the most widely used PDF viewers can be bypassed(new window) using two relatively simple techniques.
Whether you are concerned about these security vulnerabilities depends on your threat model, but you can easily enhance the security of your PDFs by using Proton Drive to store and share your files. We’ll show you how to do this in the next section.
How to password protect a PDF
Here are four easy ways to protect your PDFs with a password:
1. Use the Adobe web tool to add a user password
Even though Adobe no longer has a monopoly on the PDF format, it still produces one of the most widely used PDF management apps, Adobe Acrobat.
If you have a PDF you want to encrypt with a password, you can do so for free using their drag-and-drop web tool:
Drag and drop a PDF onto the web page or click Select a file to choose one from your device.
Set a password that users will be required to enter to view the PDF. Then click Set password.
Download the PDF.
This method does not encrypt metadata and uses the previously-discussed more vulnerable form of encryption that can be bypassed. It also does not set any permissions.
2. Use advanced password protection in Adobe Acrobat
Adobe Acrobat allows you to set both a user password that encrypts the document and an owner password to manage document permissions. We’ll explain the steps for both options.
How to encrypt your PDF with a password:
1. Open the PDF in Acrobat and go to Tools → Protect → More Options → Encrypt with Password.
2. Under Document Open, check the box next to Require a password to open the document. Enter a strong and unique password.
3. Under Options, select the version of Acrobat that will be required to open the document. Acrobat X uses the strongest type of encryption, and this version was released in 2010, so this version is recommended.
4. Then select what you want to be encrypted: the contents or the contents and metadata.
5. Click OK.
This method is vulnerable to attacks that break encryption.
How to set PDF permissions with a password:
1. Open the PDF in Acrobat and go to Tools → Protect → More Options → Encrypt with Password.
2. Check the box next to Restrict editing and printing of the document.
3. Configure the permissions you want to grant to people who know the password. Document editing is restricted already, but you can further prevent people from printing your PDF, making certain changes, or copying its content.
4. Set a password and then click OK.
This method does not encrypt the document or restrict others from viewing the document. Third-party PDF apps can also bypass your permission restrictions.
3. Password protect a PDF in Preview on Mac
Preview is the default PDF management software if you use a Mac device. Here’s how to protect PDFs with a password in Preview:
1. Open the PDF in Preview and go to File → Export.
2. Click Permissions.
3. If you want to encrypt the document, check the box next to Require Password To Open Document and set a user password.
4. If you want to require the owner password to make changes to the document, leave all the boxes under Permissions unchecked. If you want to allow some permissions without needing the owner password, check the boxes next to the permissions you want to allow.
5. Under Owner Password, choose a password. (If you also set a password to open the document, your owner password can be the same or different.)
6. Click Apply.
This method is vulnerable to one of the attacks discovered in 2019 that breaks encryption. Third-party PDF apps can also bypass your permission restrictions.
4. Password protect a PDF for sharing using Proton Drive
Another way to password protect a PDF for free is to store it on Proton Drive and share it using a secure, password-protected file-sharing link.. You can do this in addition to the methods listed above.
Proton Drive is an encrypted file storage service that lets you upload and securely store any type of file. Your files are stored on our servers using end-to-end encryption, meaning only you can access them. Once your files are uploaded to Proton Drive, you can manage them from anywhere on any device, including your web browser or your iPhone(new window) or Android(new window).
Share your files with others by uploading them to Proton Drive and generating a shareable link. When you create the shareable link, you can add a password to protect your file.
The benefit of using Proton Drive instead of, or in addition to, the built-in PDF password protections is that your file will not be vulnerable to the weaknesses inherent in PDF encryption. Proton Drive uses battle-tested cryptographic standards and end-to-end encryption so that no one, not even Proton, can access your files without your permission.
Here’s how to password protect your PDFs or any other files using Proton Drive on your web browser:
2. Go to My files, select the file or folder you want to share, and click the Get link icon. (You can’t select multiple files or multiple folders to share with a single link. But you can place multiple files and folders into another folder and then share that folder with a link.)
3. A box will pop up with your shareable link. Click Privacy settings, turn on the Protect with password switch, and enter a password. Anyone with this password will be able to decrypt your file.
4. For additional privacy, you can turn on the Set expiration date switch and choose a date after which the file will no longer be accessible via the shareable link.
5. Click Save when you’re done. Then click Copy link and share it with your recipient(s).
How can I securely share the password for a password-protected PDF?
The most secure way to share a password with someone is face to face. Depending on your threat model, you can also communicate a password using a password manager or encrypted email. With a free Proton Mail account, emails to other Proton Mail users are end-to-end encrypted so that no one, not even Proton, can read your message. You can also set the email to self-destruct. Keep in mind that short or otherwise weak passwords can be easily hacked, so make sure to set a strong password.
How can I share a PDF document securely?
Adobe Acrobat and other PDF viewers will allow you to set passwords that encrypt your document for secure sharing. But there are known security vulnerabilities with these built-in encryption methods. A more secure way to share a PDF is to store it in your end-to-end encrypted Proton Drive and generate a password-protected shareable link.
What’s the best way to share a PDF?
Any end-to-end encrypted cloud storage service that can generate file-sharing links, such as Proton Drive, is an easy way to share PDFs and other files, including large files, for free. With Proton Drive, your files will be end-to-end encrypted, and you can access them from anywhere, including from the web or our mobile apps. You can generate a shareable link to your PDF that can be opened by anyone, even if they don’t have a Proton Drive account.
Защитите свои файлы и обменивайтесь ими безопасным способом
WeTransfer is a popular service used by millions worldwide to send large files.
You may have wondered if it’s safe or whether you should use it to share
sensitive files. We answer these questions below and present a WeTransfer
alternative that may su
Dictionary attacks are a common method hackers use to try to crack passwords and
break into online accounts.
While these attacks may be effective against people with poor account security,
it’s extremely easy to protect yourself against them by usi
Data breaches are increasingly common. Whenever you sign up for an online
service, you provide it with personal information that’s valuable to hackers,
such as email addresses, passwords, phone numbers, and more. Unfortunately, many
online services f
Secure, seamless communication is the foundation of every business. As more
organizations secure their data with Proton, we’ve dramatically expanded our
ecosystem with new products and services, from our password manager to Dark Web
Monitoring for cr
On the subject of cybersecurity, one term that often comes up is brute force
attack. A brute force attack is any attack that doesn’t rely on finesse, but
instead uses raw computing power to crack security or even the underlying
encryption.
In this a
Section 702 of the Foreign Intelligence Surveillance Act has become notorious as
the legal justification allowing federal agencies like the NSA, CIA, and FBI to
perform warrantless wiretaps, which sweep up the data of hundreds of thousands
of US citi