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Proton Profile picture
@ProtonPrivacy
May 11, 2020 • 4 tweets • 2 min read • Read on X
The "Halvening" is upon us. Starting tonight, Bitcoin cut its reward for completing a block in half, from 12.5 #BTC to 6.25. The last time this happened in 2016, it was a prelude to a leap in value. Continue reading to learn how to buy and secure Bitcoin. #BitcoinHalving2020
Bitcoin was created in 2009, but many people still do not understand the original cryptocurrency. We offer a practical explanation of what Bitcoin is, as well as where to buy it and how to store it:
protonmail.com/blog/how-to-bu…
There are countless examples of cryptocurrency exchanges being hacked and Bitcoin being stolen. We explain what you can do to take your Bitcoin security into your own hands. protonmail.com/blog/how-to-ke…
It is also possible to pay for ProtonMail with #Bitcoin. Details can be found in our guide here: protonmail.com/support/knowle… Proton accumulated BTC early, giving us financial strength over the years, and we continue to hodl BTC for diversification purposes.

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More from @ProtonPrivacy

Proton Profile picture
Mar 27
The era of end-to-end encrypted DMs on Instagram is coming to a close, luckily we’ve got a ready-made list of WhatsApp alternatives (which are relevant here too) if you’re looking to shift conversations elsewhere.

(and to be clear, you should…)

1/10 Image
Let’s start with the gold standard:

Signal

🔐 End-to-end encrypted by default
🧾 Collects almost no metadata
🔍 Open-source + independently audited
📞 Calls, groups, disappearing messages

Downside: requires a phone number

2/10
Telegram

📱 Huge user base
⚙️ Feature-rich (channels, bots, multi-device sync)
⚠️ NOT encrypted by default
🕵️ Collects a lot of metadata

Note that only “secret chats” are actually E2EE, and most people never use them

3/10
Read 10 tweets
Proton Profile picture
Feb 16
Hanging out in spicy Discord servers? Well this one’s for you! 🌶️

But even if you aren’t, read on...

Discord is expanding its age verification to all 200+ million (or so) users worldwide.

Until verified, all users will be "teen-by-default", affecting what they can see.

1/6
Unless verified as an adult:

- No access to age-restricted channels, servers, & commands
- Mature content will be blurred
- You won't be able to receive DMs from unknowns
- Friend requests from unknowns will come with a warning
- No speaking on Stage (streaming) channels

2/6
Discord are keen to point that, in most cases, its new inference model with analyze data and decide if you're 18 or over with available data.

Private messages will not be analyzed for this.

If the inference model can't decide you're an adult, it'll ask you to verify...

3/6
Read 6 tweets
Proton Profile picture
Dec 16, 2025
If like many across the world you'll soon be off and looking for something to do, here’s your annual privacy & security tune-up.

Cue a looooong thread to bookmark for when you’re ready to lock it down.

If you've already done all of this, you dropped this: 👑

1/15
Audit your browser extensions

Why?

People add extensions to their browsers for many different reasons.

They will often have wide-ranging permissions, meaning they could access and track your online activity.

Not useful? bin it!

Even if it is, proceed with caution.

2/15
Enable 2FA for anything that matters

Why?

Authenticating with 1 factor, like a password, leaves you vulnerable.

Why would you just use one key to get into your house when you can have the security of two? Especially when that 2nd can be hard-to-fake like biometrics.

3/15
Read 15 tweets
Proton Profile picture
Dec 2, 2025
The GrapheneOS team has said that “France isn’t a safe country for open source privacy projects,” pointing to what it describes as the expectations of encryption backdoors.

Last week, it announced it has removed all servers from France.



1/5
This raises some questions: what is GrapheneOS, why do people use it, and what's up with France? 🇫🇷

For the first question: GrapheneOS is a nonprofit, open-source, and Android-based operating system used by many people seeking better privacy, security, & control.

2/5
It offers no bloatware, Google lock-in, forced apps, or background data collection, as well as advanced privacy & security.

GrapheneOS has also begun to end its relationship with hosting provider, OVHCloud.

There are open questions on if OVH can guarantee data sovereignty.

3/5
Read 5 tweets
Proton Profile picture
Nov 24, 2025
Security researchers say a design flaw in WhatsApp’s contact-lookup feature has enabled what they call the “largest data leak in history”, exposing billions of phone numbers without breaking encryption.

Normally the lookup process would incur rate limits, normally...

1/5 Image
But in this case, they were able to run through 7k phone numbers /second (and session), using 63bn numbers generated by their tool.

None of this required decrypting a single message.

They confirmed 3.5bn phone numbers, more than the number officially stated by WhatsApp.

2/5
More than 57% of the active accounts they grabbed had a profile picture; two thirds of this group had images containing human faces.

~29% had text in their profile which could be used to discover more about them, such as their sexuality, political views, or drug use.

3/5
Read 5 tweets
Proton Profile picture
Oct 28, 2025
As 2025 winds down, we’re continuing to build tools that let you take control of your digital life without compromising privacy.

Our latest roadmap reflects your feedback and our mission: to empower you, not exploit you.

Here’s a peek at what’s coming next 👇

1/4
✉️ Mail & Calendar

Smarter inboxes will use Category View to automatically sort emails while staying private.

🌐 VPN

We will add free servers in 5 additional countries (Mexico, Canada, Switzerland, Norway, and Singapore) - better speeds, more coverage.

2/4
📁 Drive

Shared Drives are coming, allowing you to collaborate securely with teams or family in one encrypted space.

🔒 Pass

Folders and subfolders in Proton Pass will help you keep your files and credentials organized.

3/4
Read 4 tweets

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