all-in-one privacy solution":["Proton Unlimited to wszechstronne rozwiązanie zapewniające prywatność"],"Black Friday":["Czarny Piątek"],"No ads. Privacy by default.":["Brak reklam. Prywatność w standardzie."],"People before profits":["Ludzie przed zyskiem"],"Security through transparency":["Bezpieczeństwo dzięki przejrzystości"],"The best Proton Mail ${ BLACK_FRIDAY } deals":["Najlepsze oferty Proton Mail ${ BLACK_FRIDAY }"],"The world’s only community- supported email service":["Jedyna na świecie usługa poczty elektronicznej wspierana przez społeczność"]},"specialoffer:limited":{"${ hours } hour":["${ hours } godzina","${ hours } godziny","${ hours } godzin","${ hours } godziny"],"${ hoursLeft }, ${ minutesLeft } and ${ secondsLeft } left":["Pozostało: ${ hoursLeft }, ${ minutesLeft } i ${ secondsLeft }"],"${ minutes } minute":["${ minutes } minuta","${ minutes } minuty","${ minutes } minut","${ minutes } minuty"],"${ seconds } second":["${ seconds } sekunda","${ seconds } sekundy","${ seconds } sekund","${ seconds } sekundy"],"Limited time offer":["Oferta ograniczona czasowo"]},"specialoffer:listitem":{"Create multiple addresses":["Utwórz wiele adresów"],"Hide-my-email aliases":["Aliasy hide-my-email"],"Quickly unsubscribe from newsletters":["Szybko anuluj subskrypcję biuletynów"],"Use your own domain name":["Korzystaj z własnej nazwy domeny"]},"specialoffer:logos":{"As featured in":["Opinie naszych klientów"]},"specialoffer:metadescription":{"Get an encrypted email that protects your privacy":["Uzyskaj zaszyfrowaną usługę e-mail, która chroni Twoją prywatność"]},"specialoffer:metatitle":{"Proton Mail Black Friday Sale - Up to 40% off":["Wyprzedaż Proton Mail z okazji Czarnego Piątku – uzyskaj do 40% zniżki"]},"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.":["Uzyskaj do 40% zniżki na subskrypcje Proton Mail w ten Czarny Piątek. Znajdź wspaniałe oferty naszych bezpiecznych planów usługi poczty elektronicznej w szyfrowaniu end-to-end."]},"specialoffer:newmetatitle":{"Proton Mail Black Friday sale | Up to 40% off secure email":["Wyprzedaż Proton Mail z okazji Czarnego Piątku | Do 40% zniżki na bezpieczną pocztę elektroniczną"]},"specialoffer:note":{"* Billed at ${ TOTAL_SUM } for the first year":["* Płatne ${ TOTAL_SUM } za pierwszy rok"],"*Billed at ${ TOTAL_SUM } for the first 2 years":["* Płatne ${ TOTAL_SUM } za pierwsze 2 lata"],"30-day money-back guarantee":["30-dniowa gwarancja zwrotu pieniędzy"],"Billed at ${ TOTAL_SUM } for the first 2 years":["Płatne ${ TOTAL_SUM } za pierwsze 2 lata"],"Billed at ${ TOTAL_SUM } for the first year":["Płatne ${ TOTAL_SUM } za pierwszy rok"],"You save ${ SAVE_SUM }":["Oszczędzasz ${ SAVE_SUM }"]},"specialoffer:off":{"${ DISCOUNT } off":["-${ DISCOUNT }"],"${ PERCENT_OFF } off":["-${ PERCENT_OFF }"]},"specialoffer:testimonial":{"I love my ProtonMail":["Uwielbiam ProtonMail"],"My favorite email service":["Moja ulubiona usługa e-mail"],"Thanks Proton for keeping us all safe in the complicated internet universe.":["Dziękuję Protonowi za dbanie o nasze bezpieczeństwo w skomplikowanym internetowym uniwersum."],"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":["Dostajesz to, za co płacisz. W przypadku przedsiębiorstw big tech, jeśli nie płacisz nic, zostaniesz wykorzystany. Przestałam korzystać z Gmail i przeniosłam się na @ProtonMail"]},"specialoffer:time":{"Days":["Dni"],"Hours":["Godz."],"Min":["Min"]},"specialoffer:title":{"And much more":["I wiele więcej"],"Make your inbox yours":["Spraw, aby Twoja skrzynka odbiorcza była naprawdę Twoja"],"Safe from trackers":["Bezpieczeństwo od skryptów śledzących"],"Stay organized":["Zachowaj porządek"],"Black Friday email deals":["Oferty e-mailowe na Czarny Piątek"],"Don’t just take our word for it":["Nie musisz wierzyć nam na słowo"],"Our story":["Nasza historia"],"Transfer your data from Google in one click":["Przenieś dane z Google jednym kliknięciem"]},"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.":["Uzyskaj dostęp do zablokowanych treści i przeglądaj prywatnie Internet. Zawiera ponad ${ TOTAL_SERVERS } serwerów w ponad ${ TOTAL_COUNTRIES } krajach z możliwością połączenia do 10 urządzeń, a także dostęp do globalnych usług streamingu, blokadę reklam, złośliwego oprogramowania i wiele więcej."],"Easily share your calendar with your family, friends or colleagues, and view external calendars.":["Łatwo udostępniaj swój kalendarz rodzinie, znajomym oraz współpracownikom i wyświetla kalendarze zewnętrzne."],"Includes support for 1 custom email domain, 10 email addresses, 10 hide-my-email aliases, calendar sharing, and more.":["Zawiera obsługę 1 niestandardowej domeny e-mail, 10 adresów e-mail, 10 aliasów hide-my-email, udostępnianie kalendarza i nie tylko."],"Includes support for 3 custom email domains, 15 email addresses, unlimited hide-my-email aliases, calendar sharing, and more.":["Obejmuje obsługę 3 niestandardowych domen e-mail, 15 adresów e-mail, nielimitowane aliasy hide-my-email, udostępnianie kalendarza i nie tylko."],"Manage up to 25 calendars, mobile apps, secured with end-to-end encryption, 1-click calendar import from Google, and more.":["Zarządzanie nawet 25 kalendarzami, aplikacje mobilne, bezpieczne szyfrowanie metodą end-to-end, importowanie kalendarza za pomocą jednego kliknięcia z Google i więcej."]},"Status Banner":{"At the moment we are experiencing issues with the Proton VPN service":["W tej chwili mamy problemy z usługą Proton VPN"],"Learn more":["Dowiedz się więcej"]},"Status banner":{"Learn more":["Dowiedz się więcej"],"Please note that at the moment we are experiencing issues with the ${ issues[0] } service.":["Uwaga: obecnie występują problemy z usługą ${ issues[0] }."],"We are experiencing issues with one or more services at the moment.":["Mamy problemy z co najmniej jedną usługą."]},"suggestions":{"Suggestions":["Sugestie"]},"Support":{"Sub category":["Podkategoria","Podkategorie","Podkategorii","Podkategorii"]},"Support article":{"${ readingTime } min":["${ readingTime } min","${ readingTime } min","${ readingTime } min","${ readingTime } min"],"Category":["Kategoria","Kategorie","Kategorii","Kategorii"],"Didn’t find what you were looking for?":["Nie znaleziono szukanej frazy?"],"General contact":["Skontaktuj się, wykorzystując ogólne zapytanie"],"Get help":["Uzyskaj pomoc"],"Legal contact":["Skontaktuj się z działem prawnym"],"Media contact":["Skontaktuj się z zespołem medialnym"],"Partnerships contact":["Skontaktuj się z zespołem ds. partnerstwa"],"Reading":["Odczytywanie"]},"Support categories":{"Browse Proton product support":["Przeglądaj wsparcie dotyczące produktów Proton"]},"Support category":{"There is no article in this category yet.":["W tej kategorii jeszcze nie ma żadnego artykułu."]},"Support troubleshooting":{"--- Select ---":["--- Wybierz ---"],"App version":["Wersja aplikacji"],"Browser":["Przeglądarka"],"Check if this helps":["Sprawdź, czy to pomoże"],"Choose a category for your question":["Wybierz kategorię pytania"],"Choose a product":["Wybierz produkt"],"Did this solve your issue ?":["Czy Twój problem został rozwiązany?"],"Faster assistance is just a few clicks away — please make your selections":["Szybsze wsparcie w zasięgu ręki – dokonaj wyboru"],"No, contact support":["Nie, skontaktuj się z pomocą techniczną"],"Proton account":["Konto 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":["Dziękujemy za podzielenie się opinią"],"Troubleshooting":["Rozwiązywanie problemów"],"What can we help with ?":["W czym możemy Ci pomóc?"],"Yes":["Tak"]},"support_modal_search_query":{"Search query":["Zapytanie wyszukiwania"]},"support_search_button":{"Search":["Szukaj"]},"support_search_i_am_looking_for":{"I'm looking for":["Szukam"]},"SupportForm":{"For a faster resolution, please report the issue from the Bridge app: Help > Report a problem.":["W celu szybszego rozwiązania problemu dokonaj zgłoszenia przez aplikację Bridge: Pomoc > Zgłoś problem."],"Information":["Informacje"]},"SupportForm:option":{"Account Security":["Bezpieczeństwo konta"],"Contacts":["Kontakty"],"Custom email domain":["Niestandardowa domena e-mail"],"Email delivery and Spam":["Dostarczanie wiadomości e-mail i spam"],"Encryption":["Szyfrowanie"],"Login and password":["Login i hasło"],"Merge aliases and accounts":["Scalanie aliasów i kont"],"Migrate to Proton":["Migracja do Proton"],"Notifications":["Powiadomienia"],"Other":["Inne"],"Plans and billing":["Plany i rozliczenia"],"Proton for Business":["Proton for Business"],"Sign up":["Rejestracja"],"Storage":["Przestrzeń dyskowa"],"Users, addresses, and identities":["Użytkownicy, adresy i tożsamości"]},"SupportForm:optionIntro":{"Select a topic":["Wybierz temat"]},"swiss_baseed_feature":{"Swiss based":["Ulokowany w Szwajcarii"]},"Testimonial":{"Awards":["Nagrody"],"Customers":["Klienci"],"Featured":["Wyróżnione"],"Go to testimonial source":["Przejdź do źródła referencji"],"Reviews":["Opinie"],"Videos":["Pliki wideo"]},"Text":{"Find the plan that's right for you":["Znajdź odpowiedni plan dla siebie"],"If you need help, check out our ${ supportLink }.":["Jeśli potrzebujesz pomocy, sprawdź naszą ${ supportLink }."],"The page you’re looking for might have been removed, or it could be an\nold link.":["Strona, której szukasz, mogła zostać usunięta lub link jest przestarzały."]},"Title":{"On this page":["Na tej stronie"],"Related articles":["Powiązane artykuły"],"Share ${ thisPage }":["Udostępnij ${ thisPage }"],"Thank you!":["Dziękujemy!"],"this page":["tę stronę"]},"Tooltip":{"More information":["Więcej informacji"]},"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.":["Utwórz do 20 niestandardowych, szyfrowanych kalendarzy z możliwością ich udostępniania. Ponadto możesz dodać do 5 kalendarzy znajomych, rodziny, współpracowników i organizacji."]},"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.":["Uzyskaj dostęp do zablokowanych treści i przeglądaj prywatnie Internet. Zawiera ponad ${ TOTAL_SERVERS } serwerów w ponad ${ TOTAL_COUNTRIES } krajach, najwyższe prędkości VPN, ${ TOTAL_VPN_CONNECTIONS } połączeń VPN, usługi streamingu na całym świecie, blokowanie reklam oraz złośliwego oprogramowania i wiele więcej."],"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.":["Uzyskaj dostęp do zablokowanych treści i przeglądaj prywatnie Internet. Zawiera ponad ${ TOTAL_SERVERS } serwerów w ponad ${ TOTAL_COUNTRIES } krajach, najwyższe prędkości VPN, 10 połączeń VPN, usługi streamingu na całym świecie, blokowanie reklam oraz złośliwego oprogramowania i wiele więcej."]},"version_history_label":{"Version history":["Historia wersji"]},"version_history_tooltip":{"Store up to ${ versionHistoryNumber } versions of each file for up to ${ years } years":["Przechowuj do ${ versionHistoryNumber } wersji każdego pliku do ${ years } lat"]},"vpn_features_link":{"View VPN plans":["Wyświetl plany usługi VPN"]},"vpn_features_useCase":{"Access blocked content and browse privately":["Uzyskaj dostęp do zablokowanej zawartości i przeglądaj ją prywatnie"]}}},"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;
})();
Improved Authentication for Email Encryption and Security | Proton
Today, we are happy to announce the launch of a brand new authentication system for Proton Mail’s secure email service using just a single password.
Proton Mail launched with a two-password system—one to authenticate the user to Proton Mail, and one to decrypt the mail. The security benefit provided by this separation is easy to understand, but it has multiple usability issues.
First, two passwords are more difficult to remember than one, and it contributes to users losing access to their accounts and mail. Second, it tends to confuse password managers, one of the best ways to organize and secure passwords. Third, it makes two-factor authentication (a best-practice method to securing online accounts) a very onerous process, as the user has to enter both passwords and a two-factor code to log in.
At Proton Mail, our mission to is make secure communication easy-to-use and secure. In pursuit of these goals, we are happy to introduce both one-password and two-factor authentication support with Proton Mail 3.6.0. While Proton Mail’s authentication system has been completely redesigned, these changes are transparent to end users, and we will continue to support the legacy two-password mode.
Design Philosophy
Our basic assumption is that all servers can be compromised, and that sooner or later, Proton Mail will also be compromised. Incidents like the Yahoo breach(new window) are not isolated, and will gradually become the norm over the next decade. This is the fundamental philosophy behind our Zero Knowledge Architecture. By utilizing client side end-to-end encryption, we ensure that we do not have the ability to decrypt your emails, and thus, your communications would also be inaccessible to any attacker who does manage to breach our systems. This same philosophy was also applied when we redesigned our authentication system.
How does One-Password Mode work?
In two-password mode, there is a login password and a mailbox password. The login password authenticates the user to Proton Mail and is not stored by the client. The server will occasionally ask the user for the login password to confirm sensitive settings changes, such as password changes. The mailbox password, however is cached on the client, as it is only used to decrypt mail. Simply making the login password the same as the mailbox password is a problem, because then there is no barrier to account takeover for someone with physical possession of your device and some technical know-how.
In Proton Mail’s one-password mode, the mailbox password is derived from the login password via a one-way cryptographic password hash. The input to this hash includes a salt provided by the server on login but not stored in the client. In this way, compromise of the mailbox password does not automatically lead to compromise of the login password.
In this scheme, however, the login password cannot be sent to Proton Mail directly, as it can be used to calculate the mailbox password and thus decrypt mail. To solve this problem, we have re-engineered our entire login process to never send the login password to our server, which has the added benefit of helping protect against MITM (man-in-the-middle) attacks.
Secure Remote Password (SRP) Protocol
The Secure Remote Password (SRP) protocol(new window) is widely-tested and widely-deployed password-authenticated key agreement (PAKE) protocol which mutually authenticates both the user and server while never sending any password-equivalent data over the network. Authentication attempts cannot be replayed, and the protocol remains secure even in the presence of active tampering by a third party. More information about SRP can be found here(new window) and here(new window).
SRP 6a (the latest revision) has been protecting all Proton Mail logins for more than two months now, and with this improvement, we are now able to safely offer one-password mode to our users with no reduction in our security guarantee. When using SRP, even an attacker who can arbitrarily read, modify, delay, destroy, repeat, or fabricate messages between Proton Mail and a user in an undetectable fashion is limited to checking only a single password guess per login attempt, which is equivalent to just trying to log in directly. Even if Proton Mail is compromised and acts maliciously, password equivalent information is never revealed. Thus, with SRP, Proton Mail’s security is greatly strengthened against MITM attacks (particularly for the native clients).
Technical Implementation Details
This section may be difficult to follow without appropriate mathematical and security background and can be skipped.
The security of SRP, like that of Diffie-Hellman, is based on the difficulty of the discrete logarithm problem. One potential issue with this is heavy precomputation via a number field sieve done for a particular modulus to enable faster breaking of the protocol.
For Proton Mail’s implementation we use multiple moduli, randomly chosen every time a user’s password is changed. This offers a number of advantages, notably the possibility of rotating out old moduli with time and limiting the motivation for precomputation, as any modulus would only apply to a subset of users.
To further protect against precomputation, we choose our own primes rather than those recommended by the TLS specification or otherwise commonly used, as these are large targets and almost certainly have been worked on by the world’s security services. We do this by choosing a random 2048-bit integer, setting the top bit to ensure it is large, and picking the first safe prime greater than or equal which has 2 as a generator of the whole group. By using safe primes, we are not vulnerable to backdoored primes(new window). The native (mobile) clients verify the safety of the primes before use, and we also cryptographically sign the moduli to prevent tampering.
2048-bit moduli are used because that proved to be the upper limit that existing web and mobile clients can handle with acceptable performance. This size should be beyond sufficient from a security perspective for the near- and medium-term future and can be increased by rotating in new moduli.
The most widely-used implementation of SRP is TLS-SRP as described in RFC 5054(new window). Our implementation differs from it in several ways, none of which decrease security. First, SHA-1 is a poor password hash function, and in order to migrate our existing password database, we were locked into using bcrypt for this purpose anyway. We do use semi-random password salts (one random part, one non-random part) but do not use the username as the non-random part to enable login with both email addresses and usernames. With bcrypt, password inputs are truncated after 72 characters. For practical purposes, this has no impact on security. As noted above, we also choose our own moduli, and the entire transaction is embedded inside certificate-based TLS for added security.
There exist other PAKE schemes in addition to SRP. We chose SRP because it has been battle-tested, is well known, has many existing implementations, has thorough documentation about pitfalls to avoid, and no patent issues. A promising alternative scheme in the future may be AugPAKE(new window), which benefits from the existence of a security proof(new window) (Edit on April 11th, 2017: this proof may be flawed, so any transition is on-hold indefinitely until the situation is clarified). We should be able to seamlessly switch to AugPAKE in the future if necessary.
One-password mode is the culmination of many months of behind-the-scenes work to make Proton Mail more secure and easy-to-use than ever. While we will always support two-password mode, one-password mode will be the default for the future and we recommend that existing users consider switching for increased ease-of-use. A step-by-step guide for switching can be found here(new window).
At Proton Mail, we appreciate more deeply than most that security is a rapidly moving target. Threats are constantly evolving, and every month, we see more and more complex attacks launched against Proton Mail. Because of this, we invest a considerable amount of resources on research and development to stay ahead of current and future threats. Most of this work happens behind the scenes, and is not as visible as new features or UI improvements, but nevertheless, they are a critical part of creating a solid secure email service.
If you would like to support these efforts, upgrading to a paid Proton Mail account is a great way to do so. On the security side, our work is never done, so in the coming months, we will be releasing additional security features to make Proton Mail even more secure.
2016-12-04: Some minor corrections and clarifications.
Proton Mail is supported by community contributions. We don’t serve ads or abuse your privacy. You can support our mission by upgrading to a paid plan.
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
In response to the growing number of data breaches, Proton Mail offers a feature
to paid subscribers called Dark Web Monitoring. Our system checks if your
credentials or other data have been leaked to illegal marketplaces and alerts
you if so. Often
Your email address is your online identity, and you share it whenever you create
a new account for an online service. While this offers convenience, it also
leaves your identity exposed if hackers manage to breach the services you use.
Data breaches
Our mission at Proton is to help usher in an internet that protects your privacy
by default, secures your data, and gives you the freedom of choice.
Today we’re taking another step in this direction with the launch of our open
source password manage