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Privatsphäre als Standard."],"People before profits":["Menschen sind uns wichtiger als Gewinne"],"Security through transparency":["Sicherheit durch Transparenz"],"The best Proton Mail ${ BLACK_FRIDAY } deals":["Die besten Proton Mail-Angebote zum ${ BLACK_FRIDAY }"],"The world’s only community- supported email service":["Der weltweit einzige von der Community unterstützte E-Mail-Dienst"]},"specialoffer:limited":{"${ hours } hour":["${ hours } Stunde","${ hours } Stunden"],"${ hoursLeft }, ${ minutesLeft } and ${ secondsLeft } left":["Nur noch ${ hoursLeft }, ${ minutesLeft } und ${ secondsLeft }"],"${ minutes } minute":["${ minutes } Minute","${ minutes } Minuten"],"${ seconds } second":["${ seconds } Sekunde","${ seconds } Sekunden"],"Limited time offer":["Zeitlich befristetes Angebot"]},"specialoffer:listitem":{"Create multiple addresses":["Erstelle mehrere Adressen"],"Hide-my-email aliases":["Hide-my-email-Aliase"],"Quickly unsubscribe from newsletters":["Newsletter schnell abbestellen"],"Use your own domain name":["Verwende deine eigene Domain"]},"specialoffer:logos":{"As featured in":["Vorgestellt in"]},"specialoffer:metadescription":{"Get an encrypted email that protects your privacy":["Nutze einen verschlüsselte E-Mail-Dienst, der deine Privatsphäre schützt"]},"specialoffer:metatitle":{"Proton Mail Black Friday Sale - Up to 40% off":["Proton Mail Black Friday-Angebot – Bis zu 40 % Rabatt"]},"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.":["Erhalte an diesem Black Friday bis zu 40 % Rabatt auf Proton Mail-Abonnements. Mache tolle Schnäppchen bei unseren sicheren, Ende-zu-Ende-verschlüsselten E-Mail-Abonnements."]},"specialoffer:newmetatitle":{"Proton Mail Black Friday sale | Up to 40% off secure email":["Proton Mail-Black-Friday-Angebot | Bis zu 40 % Rabatt auf sichere E-Mails"]},"specialoffer:note":{"* Billed at ${ TOTAL_SUM } for the first year":["* Zum Preis von ${ TOTAL_SUM } im ersten Jahr"],"*Billed at ${ TOTAL_SUM } for the first 2 years":["*Zum Preis von ${ TOTAL_SUM } in den ersten zwei Jahren"],"30-day money-back guarantee":["30-tägige Geld-zurück-Garantie"],"Billed at ${ TOTAL_SUM } for the first 2 years":["Zum Preis von ${ TOTAL_SUM } in den ersten zwei Jahren"],"Billed at ${ TOTAL_SUM } for the first year":["Zum Preis von ${ TOTAL_SUM } im ersten Jahr"],"You save ${ SAVE_SUM }":["Du sparst ${ SAVE_SUM }"]},"specialoffer:off":{"${ PERCENT_OFF } off":["− ${ PERCENT_OFF }"]},"specialoffer:testimonial":{"I love my ProtonMail":["Ich liebe mein ProtonMail"],"My favorite email service":["Mein Lieblings-E-Mail-Dienst"],"Thanks Proton for keeping us all safe in the complicated internet universe.":["Danke Proton, dass du uns alle im komplizierten Internet-Universum beschützt."],"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":["Du bekommst, wofür du bezahlst. Wenn du nichts bezahlst, wirst du bei der Nutzung von Big Tech ausgenutzt. Ich habe Gmail aufgegeben und bin zu @ProtonMail gewechselt"]},"specialoffer:time":{"Days":["Tage"],"Hours":["Stunden"],"Min":["Min."]},"specialoffer:title":{"And much more":["Und vieles mehr"],"Safe from trackers":["Sicher vor Trackern"],"Stay organized":["Ordnung halten"],"Black Friday email deals":["E-Mail-Angebote zum Black Friday"],"Don’t just take our word for it":["Verlasse dich nicht nur auf unser Wort"],"Make your inbox yours":["Passe deinen Posteingang an"],"Our story":["Unsere Geschichte"],"Transfer your data from Google in one click":["Übertrage deine Daten von Google mit einem Klick"]},"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.":["Greife auf blockierte Inhalte zu und surfe privat. Umfasst ${ TOTAL_VPN_SERVERS } Server in über ${ TOTAL_VPN_COUNTRIES } Ländern, die Verbindung \nvon bis zu 10 Geräten, weltweite Streaming-Dienste, Malware- und Werbeblocker und mehr."],"Easily share your calendar with your family, friends or colleagues, and view external calendars.":["Teile deinen Kalender ganz einfach mit Verwandten, Freunden oder Kollegen und rufe externe Kalender auf."],"Includes support for 1 custom email domain, 10 email addresses, 10 hide-my-email aliases, calendar sharing, and more.":["Beinhaltet Unterstützung für eine eigene E-Mail-Domain, 10 E-Mail-Adressen, 10 „hide-my-email“-Aliasse, Kalenderfreigabe und mehr."],"Includes support for 3 custom email domains, 15 email addresses, unlimited hide-my-email aliases, calendar sharing, and more.":["Beinhaltet Unterstützung für 3 benutzerdefinierte E-Mail-Domänen, 15 E-Mail-Adressen, unbegrenzte „hide-my-email“-Aliase, Kalenderfreigabe und mehr."],"Manage up to 25 calendars, mobile apps, secured with end-to-end encryption, 1-click calendar import from Google, and more.":["Verwalte bis zu 25 Kalender, Ende zu Ende verschlüsselte mobile Apps, 1-Klick-Kalenderimporte von Google und vieles mehr."]},"Status Banner":{"At the moment we are experiencing issues with the Proton VPN service":["Im Moment gibt es Probleme mit dem Proton VPN-Dienst"]},"Status banner":{"Learn more":["Mehr erfahren"],"Please note that at the moment we are experiencing issues with the ${ issues[0] } service.":["Bitte beachte, dass wir im Moment Probleme mit dem Dienst ${ issues[0] } haben."],"We are experiencing issues with one or more services at the moment.":["Im Moment gibt es Probleme mit einem oder mehreren Diensten."]},"steps":{"Step":["Schritt"]},"suggestions":{"Suggestions":["Vorschläge"]},"Support":{"Sub category":["Unterkategorie","Unterkategorien"]},"Support article":{"${ readingTime } min":["${ readingTime } Min.","${ readingTime } Min."],"Category":["Kategorie","Kategorien"],"Didn’t find what you were looking for?":["Hast du nicht gefunden, wonach du gesucht hast?"],"General contact":["Allgemeiner Kontakt"],"Get help":["Hilfe erhalten"],"Legal contact":["Kontakt für Rechtliches"],"Media contact":["Kontakt für Medien"],"Partnerships contact":["Kontakt für Partnerschaften"],"Reading":["Lesen"]},"Support Form Platform option":{"VPN for Android TV":["VPN für Android TV"],"VPN for Apple TV":["VPN für Apple TV"],"VPN for Chromebook":["VPN für Chromebook"]},"Support troubleshooting":{"App version":["App-Version"],"Browser":["Browser"],"Check if this helps":["Schau, ob das hilft."],"Choose a product":["Produkt auswählen"],"Did this solve your issue?":["Hat dies dein Problem gelöst?"],"Faster assistance is just a few clicks away":["Schnellere Hilfe ist nur ein paar Klicks entfernt"],"How can we help?":["Wie können wir dir helfen?"],"No, contact support":["Nein, Support kontaktieren"],"Please fill out one field after another":["Bitte fülle ein Feld nach dem anderen aus"],"Please make your selections":["Bitte triff deine Auswahl"],"Proton account":["Proton-Konto"],"Proton for Business":["Proton for Business"],"Thank you for your feedback":["Danke für dein Feedback"],"What can we help with?":["Wobei können wir dir helfen?"],"Yes":["Ja"]},"support_modal_search_query":{"Search query":["Anfrage suchen"]},"support_search_button":{"Search":["Suchen"]},"support_search_i_am_looking_for":{"I'm looking for":["Ich suche"]},"SupportForm":{"For a faster resolution, please report the issue from the Bridge app: Help > Report a problem.":["Damit das Problem schneller gelöst werden kann, melde es bitte über die Bridge-App: Help > Report a problem (Hilfe > Problem melden)."],"Information":["Informationen"]},"SupportForm:option":{"Account Security":["Kontosicherheit"],"Contacts":["Kontakte"],"Custom email domain":["Benutzerdefinierte E-Mail-Domain"],"Email delivery and Spam":["E-Mail-Zustellung und Spam"],"Encryption":["Verschlüsselung"],"Login and password":["Anmeldung und Passwort"],"Merge aliases and accounts":["Zusammenführung von Aliassen und Konten"],"Migrate to Proton":["Migration zu Proton"],"Notifications":["Benachrichtigungen"],"Other":["Sonstiges"],"Plans and billing":["Abonnements und Abrechnung"],"Proton for Business":["Proton for Business"],"Sign up":["Registrierung"],"Storage":["Speicher"],"Users, addresses, and identities":["Benutzer, Adressen und Identitäten"]},"SupportForm:optionIntro":{"Select a topic":["Thema auswählen"]},"Testimonial":{"Awards":["Auszeichnungen"],"Customers":["Kunden"],"Featured":["Empfohlen"],"Go to testimonial source":["Zur Referenzquelle wechseln"],"Open source of award":["Quelle der Auszeichnung öffnen"],"Open source of quote":["Quelle des Zitats öffnen"],"Reviews":["Bewertungen"],"Videos":["Videos"],"Watch on TikTok":["Auf TikTok ansehen"],"Watch on YouTube":["Auf YouTube ansehen"]},"TestimonialCategory":{"Awards":["Auszeichnungen"],"Customers":["Kunden"],"Featured":["Empfohlen"],"Media":["Medien"],"Reviews":["Bewertungen"],"Videos":["Videos"]},"Text":{"If you need help, check out our ${ supportLink }.":["Hilfe erhältst du in unserem ${ supportLink }."],"The page you’re looking for might have been removed, or it could be an\nold link.":["Die von dir gesuchte Seite wurde möglicherweise entfernt, oder es könnte sich um einen alten Link handeln."],"Your question may already have an answer in our knowledge base:":["Vielleicht gibt es bereits eine Antwort auf deine Frage in unserer Wissensdatenbank:"]},"Title":{"On this page":["Auf dieser Seite"],"Page not found":["Seite nicht gefunden"],"Related articles":["Verwandte Artikel"],"Share ${ thisPage }":["${ thisPage } teilen"],"Switch to Proton Pass - Contact us":["Zu Proton Pass wechseln – Kontaktiere uns"],"Thank you!":["Vielen Dank!"],"this page":["diese Seite"]},"tooltip_vpn":{"Access blocked content and browse privately. Includes ${ TOTAL_VPN_SERVERS }+ servers in ${ TOTAL_VPN_COUNTRIES }+ countries, highest VPN speed, ${ TOTAL_VPN_CONNECTIONS } VPN connections, worldwide streaming services, malware and ad-blocker, and more.":["Greife auf blockierte Inhalte zu und surfe privat. 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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(neues Fenster), 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(neues Fenster). 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(neues Fenster) in 2019 alone.
Some exchanges, such as CEX.IO(neues Fenster), 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(neues Fenster) 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(neues Fenster), 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(neues Fenster) 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(neues Fenster).
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(neues Fenster). 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(neues Fenster) or Ledger(neues Fenster) 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(neues Fenster).) 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(neues Fenster) is a UK-based freelance journalist who specializes on Bitcoin-related topics. Currently, she writes for CEX.io(neues Fenster), 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.