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Privacy by default.":["Aucune publicité, le respect de la vie privée comme règle absolue"],"People before profits":["Les individus passent avant les profits"],"Security through transparency":["Notre engagement de transparence"],"The best Proton Mail ${ BLACK_FRIDAY } deals":["Les meilleures offres ${ BLACK_FRIDAY } de Proton Mail"],"The world’s only community- supported email service":[" La seule messagerie au monde soutenue par la communauté"]},"specialoffer:limited":{"${ hours } hour":["${ hours } heure","${ hours } heures"],"${ hoursLeft }, ${ minutesLeft } and ${ secondsLeft } left":["Temps restant : ${ hoursLeft }, ${ minutesLeft }, ${ secondsLeft }"],"${ minutes } minute":["${ minutes } minute","${ minutes } minutes"],"${ seconds } second":["${ seconds } seconde","${ seconds } secondes"],"Limited time offer":["Offre à durée limitée"]},"specialoffer:listitem":{"Create multiple addresses":["Créez plusieurs adresses"],"Hide-my-email aliases":["Alias « hide-my-email »"],"Quickly unsubscribe from newsletters":["Désabonnez-vous rapidement des newsletters"],"Use your own domain name":["Utilisez votre propre nom de domaine"]},"specialoffer:logos":{"As featured in":["Ils en parlent"]},"specialoffer:metadescription":{"Get an encrypted email that protects your privacy":["Choisissez une messagerie électronique chiffrée qui protège votre vie privée"]},"specialoffer:metatitle":{"Proton Mail Black Friday Sale - Up to 40% off":["Offre Proton Mail Black Friday - Jusqu'à 40 % de réduction"]},"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.":["Obtenez jusqu'à 40 % de réduction sur les abonnements Proton Mail à l'occasion du Black Friday. Profitez d'offres exceptionnelles sur nos abonnements de messagerie électronique sécurisée et chiffrée de bout en bout."]},"specialoffer:newmetatitle":{"Proton Mail Black Friday sale | Up to 40% off secure email":["Offre Black Friday Proton Mail | Jusqu'à 40 % de réduction"]},"specialoffer:note":{"* Billed at ${ TOTAL_SUM } for the first year":["* Facturé ${ TOTAL_SUM } pour la première année"],"*Billed at ${ TOTAL_SUM } for the first 2 years":["*Facturé ${ TOTAL_SUM } pour les 2 premières années"],"30-day money-back guarantee":["Garantie satisfait ou remboursé pendant 30 jours"],"Billed at ${ TOTAL_SUM } for the first 2 years":["Facturé ${ TOTAL_SUM } pour les 2 premières années"],"Billed at ${ TOTAL_SUM } for the first year":["Facturé ${ TOTAL_SUM } pour la première année"],"You save ${ SAVE_SUM }":["Vous économisez ${ SAVE_SUM }"]},"specialoffer:off":{"${ PERCENT_OFF } off":["-${ PERCENT_OFF }"]},"specialoffer:testimonial":{"I love my ProtonMail":["J'adore mon ProtonMail"],"My favorite email service":["Ma messagerie électronique préférée"],"Thanks Proton for keeping us all safe in the complicated internet universe.":["Merci Proton de nous garder en sécurité dans l'univers complexe d'internet."],"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":["Vous avez ce pour quoi vous payez. Avec les Big Tech, si vous ne payez rien, vous êtes utilisé. J'ai arrêté d'utiliser Gmail et je suis passée @ProtonMail"]},"specialoffer:time":{"Days":["Jours"],"Hours":["Heures"],"Min":["Min"]},"specialoffer:title":{"And much more":["Et aussi"],"Safe from trackers":["À l'abri des traqueurs"],"Stay organized":["Restez organisé(e)"],"Black Friday email deals":["Offres Black Friday pour la messagerie électronique"],"Don’t just take our word for it":["Ce qu'en disent nos utilisateurs"],"Make your inbox yours":["Appropriez-vous totalement votre boîte de réception"],"Our story":["Notre histoire"],"Transfer your data from Google in one click":["Transférez vos données depuis Google en un clic"]},"specialoffer:tooltip":{"Access blocked content and browse privately. Includes ${ TOTAL_VPN_SERVERS }+ servers in ${ TOTAL_VPN_COUNTRIES }+ countries, connect up to 10 devices, access worldwide streaming services, malware and ad-blocker, and more.":["Accédez aux contenus bloqués et naviguez en toute confidentialité. Comprend plus de ${ TOTAL_VPN_SERVERS } serveurs dans plus de ${ TOTAL_VPN_COUNTRIES } pays, la possibilité de connecter jusqu'à 10 appareils, l'accès aux services de streaming dans le monde entier, un bloqueur de logiciels malveillants et de publicités et bien plus encore."],"Easily share your calendar with your family, friends or colleagues, and view external calendars.":["Partagez facilement votre calendrier avec votre famille, vos amis ou collègues et consultez des calendriers externes."],"Includes support for 1 custom email domain, 10 email addresses, 10 hide-my-email aliases, calendar sharing, and more.":["Comprend la prise en charge de 1 domaine de messagerie personnalisé, de 10 adresses e-mail, de 10 alias « hide-my-email », du partage de calendriers et bien d'autres fonctionnalités."],"Includes support for 3 custom email domains, 15 email addresses, unlimited hide-my-email aliases, calendar sharing, and more.":["Comprend la prise en charge de 3 domaines de messagerie personnalisés, de 15 adresses e-mail, d'un nombre illimité d'alias « hide-my-email », du partage de calendriers et bien d'autres fonctionnalités."],"Manage up to 25 calendars, mobile apps, secured with end-to-end encryption, 1-click calendar import from Google, and more.":["Jusqu'à 25 calendriers, des applications mobiles, la sécurité avec le chiffrement de bout en bout, l'importation de calendrier en un clic depuis Google..."]},"Status Banner":{"At the moment we are experiencing issues with the Proton VPN service":["Nous rencontrons actuellement des problèmes avec le service Proton VPN."]},"Status banner":{"Learn more":["En savoir plus"],"Please note that at the moment we are experiencing issues with the ${ issues[0] } service.":["Nous rencontrons actuellement des problèmes avec le service ${ issues[0] }."],"We are experiencing issues with one or more services at the moment.":["Nous rencontrons actuellement des problèmes avec un ou plusieurs services."]},"steps":{"Step":["Étape"]},"suggestions":{"Suggestions":["Suggestions"]},"Support":{"Sub category":["Sous-catégorie","Sous-catégories"]},"Support article":{"${ readingTime } min":["${ readingTime } minute","${ readingTime } minutes"],"Category":["Catégorie","Catégories"],"Didn’t find what you were looking for?":["Vous ne trouvez pas ce que vous cherchez ?"],"General contact":["Contact - Général"],"Get help":["Obtenir de l'aide"],"Legal contact":["Contact - Juridique"],"Media contact":["Contact - Média"],"Partnerships contact":["Contact - Partenariats"],"Reading":["Lecture"]},"Support Form Platform option":{"VPN for Android TV":["VPN pour Android TV"],"VPN for Apple TV":["VPN pour Apple TV"],"VPN for Chromebook":["VPN pour Chromebook"]},"Support troubleshooting":{"App version":["Version de l'application"],"Browser":["Navigateur"],"Check if this helps":["Vérifiez si cela vous aide."],"Choose a product":["Choisir un produit"],"Did this solve your issue?":["Cela a-t-il résolu votre problème ?"],"Faster assistance is just a few clicks away":["Quelques clics suffisent pour obtenir une assistance plus rapide"],"How can we help?":["Comment pouvons-nous vous aider ?"],"No, contact support":["Non, contacter le support"],"Please fill out one field after another":["Veuillez remplir les champs l'un après l'autre"],"Please make your selections":["Veuillez faire vos sélections"],"Proton account":["Compte Proton"],"Proton for Business":["Proton for Business"],"Thank you for your feedback":["Nous vous remercions pour votre commentaire."],"What can we help with?":["En quoi pouvons-nous vous aider ?"],"Yes":["Oui"]},"support_modal_search_query":{"Search query":["Recherche"]},"support_search_button":{"Search":["Rechercher"]},"support_search_i_am_looking_for":{"I'm looking for":["Je recherche des informations sur..."]},"SupportForm":{"For a faster resolution, please report the issue from the Bridge app: Help > Report a problem.":["Pour que le problème soit résolu plus rapidement, vous pouvez le signaler à partir de l'application Bridge : Aide > Signaler un bug."],"Information":["Informations"]},"SupportForm:option":{"Account Security":["Sécurité du compte"],"Contacts":["Contacts"],"Custom email domain":["Domaine de messagerie personnalisé"],"Email delivery and Spam":["Distribution des messages et indésirables/spam"],"Encryption":["Chiffrement"],"Login and password":["Identifiant et mot de passe"],"Merge aliases and accounts":["Fusion des alias et des comptes"],"Migrate to Proton":["Migration vers Proton"],"Notifications":["Notifications"],"Other":["Autre"],"Plans and billing":["Abonnements et facturation"],"Proton for Business":["Proton for Business"],"Sign up":["Inscription"],"Storage":["Espace de stockage"],"Users, addresses, and identities":["Utilisateurs, adresses et identités"]},"SupportForm:optionIntro":{"Select a topic":["Choisissez un sujet"]},"Testimonial":{"Awards":["Récompenses"],"Customers":["Clients"],"Featured":["Ils en parlent"],"Go to testimonial source":["Accéder aux commentaires"],"Open source of award":["Voir l'information originale concernant ce prix"],"Open source of quote":["Voir l'information originale concernant cette citation"],"Reviews":["Avis"],"Videos":["Vidéos"],"Watch on TikTok":["Regarder sur TikTok"],"Watch on YouTube":["Regarder sur YouTube"]},"TestimonialCategory":{"Awards":["Récompenses"],"Customers":["Clients"],"Featured":["Ils en parlent"],"Media":["Média"],"Reviews":["Avis"],"Videos":["Des vidéos"]},"Text":{"If you need help, check out our ${ supportLink }.":["Si vous avez besoin d'aide, consultez notre ${ supportLink }."],"The page you’re looking for might have been removed, or it could be an\nold link.":["La page recherchée a peut-être été retirée ou le lien utilisé n'est plus valide."],"Your question may already have an answer in our knowledge base:":["La réponse à votre question se trouve peut-être déjà dans notre base de connaissances :"]},"Title":{"On this page":["Sur cette page"],"Page not found":["Page introuvable"],"Related articles":["Articles similaires"],"Share ${ thisPage }":["Partagez ${ thisPage }"],"Switch to Proton Pass - Contact us":["Passez à Proton Pass - Contactez-nous"],"Thank you!":["Merci !"],"this page":["cette page"]},"tooltip_vpn":{"Access blocked content and browse privately. 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How to keep your bitcoins safe from theft and hacks | Proton
Security is a key consideration when it comes to Bitcoin. Here’s how you can keep your bitcoins safe from theft and hacking.
You should know that when you invest in Bitcoin, not only could the price of Bitcoin drop, but there’s also the possibility that your Bitcoin could be stolen. Unlike traditional investments, there is little insurance or other safety nets can do to protect investors if their bitcoins are taken via a hack or data breach. As Bitcoin prices have begun rising again, it is worth revisiting your security efforts.
Everyone talks about how great it is that Bitcoin is a decentralized currency(nouvelle fenêtre), but as with everything, this has its downsides. If you use a centralized version of cash and hold it in a bank account, you are basically guaranteed that it will be there when you go to retrieve it. This is because each bank has a brand value they want to preserve, so they have an incentive to secure the money on their ledger in order to maintain customers’ trust. If your money or credit card number is stolen, the bank will likely replace it themselves to maintain your trust – and your business.
Bitcoin doesn’t have any insurance like this. While no one can move your bitcoins without your wallet’s private key, if they do get a hold of your private key, they’ll be able to take all your cryptocurrency and you will not be able to recover it. Due to the complexity in the Bitcoin ecosystem, there are always risks. Security has improved regarding Bitcoin, but hackers are always coming up with new and creative attacks(nouvelle fenêtre). However, there are a few things you can do to keep your Bitcoin safe:
The most important thing to do if you are storing large amounts of bitcoins is to make sure you don’t keep them within the exchange you bought them in. While exchanges have become more secure in recent years, there were several high-profile hacks(nouvelle fenêtre) in 2019 alone.
Some exchanges, such as CEX.IO(nouvelle fenêtre), store user bitcoins offline in cold storage for better security, but this is not a guarantee of safety either. Because of the “cash-like” nature of Bitcoin, we recommend you take security into your own hands.
Taking Bitcoin security into your own hands
There are two main factors to consider when assessing your own security: storage security and computer security.
Storage security(nouvelle fenêtre) refers to what you do to keep your private key safe. Computer security encompasses all the security steps you take to make sure your computer is not compromised.
Computer security is important not just for protecting your Bitcoin, but also your identity and banking-related information. There are many examples of viruses and keyloggers ending up on people’s computers and costing them everything. We recommend regularly updating all software and adhering to cybersecurity best practices(nouvelle fenêtre), such as not downloading or opening email attachments from unknown senders. Proton Mail can help in this case, thanks to the strong set of anti-phishing protections(nouvelle fenêtre) it uses to warn and protect users from malicious emails.
When it comes to storage security, the first important lesson is to not keep all of your eggs in one basket. In the real world, nobody walks around with their life savings in their pocket. If they did this and then got unlucky and were mugged, they would be completely ruined. Similarly, it is advisable to divide up your bitcoins into several wallets. A quick summary of the different types of Bitcoin wallets can be found here(nouvelle fenêtre).
We recommend being cautious with online wallets. Any online web wallet that stores your private key online is asking for too much trust, especially given their poor security record. You probably shouldn’t keep your private key on your computer. There are too many ways for it to end up lost if your computer is stolen, crashes, or is compromised.
If you do use an online wallet or a Bitcoin exchange, make sure it is connected to a secure email account(nouvelle fenêtre). A Proton Mail account with two-factor authentication enabled is a good option. Your messages are protected with end-to-end encryption, and your password is required to decrypt any messages, even in the unlikely event that Proton Mail itself would be compromised. Many people also use Proton Mail to store a copy of their Bitcoin address private key for the same reason ─ a Proton Mail message can only be accessed by the email account owner. Furthermore, because Proton Mail is a cloud email service, there is no risk of losing your private key if your computer crashes.
Bitcoin cold storage
For long term storage of large amounts of Bitcoin, we recommend storing your bitcoins completely offline, using what is known as cold storage. This involves using a hardware Bitcoin wallet (such as the Trezor(nouvelle fenêtre) or Ledger(nouvelle fenêtre) wallet) and writing down your Bitcoin private key on paper stored someplace secure, like in a bank vault. (You could also engrave your private key on something more durable, like metal(nouvelle fenêtre).) Because your private key is safely stored offline, your Bitcoin storage is now immune to computer viruses and many other hacking attempts.
When holding large amounts of Bitcoin, the cost of losing them increases dramatically. Compared to the value of bitcoins, the cost of taking additional security measures is quite low, so it is worthwhile for every serious Bitcoin investor to take precautions. As a final note, the threat model for your bitcoins needs to adapt as their value increases. The more valuable a data breach or hack is, the more motivated attackers will be.
About the author
Mary Ann Callahan(nouvelle fenêtre) is a UK-based freelance journalist who specializes on Bitcoin-related topics. Currently, she writes for CEX.io(nouvelle fenêtre), a multi-functional cryptocurrency exchange. She writes articles related to blockchain security, Bitcoin purchase guides, and Bitcoin regulations in different countries. Previously, she worked for Boston Globe Media and holds a Master’s degree in Journalism from Columbia University.
Want to keep your bitcoins safe? Then use an encrypted email account to open your Bitcoin-related online accounts. You can get a free secure email account from Proton Mail here.
Thousands of businesses of all sizes were impacted by cybercrime in 2024. Here
are the top cybersecurity threats we expect companies to face in 2025—and how
Proton Pass can protect your business.