Introducing the updated Proton. More services, one privacy mission. Learn more

Introducing the updated Proton. Learn more

           

Security


 

What is AES encryption?

December 17th, 2021 in Privacy & Security

AES is a fast, efficient, and secure encryption standard. Certified by the National Institute of Standards and Technology (NIST), AES is used by the United States government to secure classified data. This has led many companies to market AES (especially AES with a 256-bit key) as “military-grade encryption”, although such terminology is as inaccurate as […]

What is bloatware and is it a security risk?

December 9th, 2021 in Privacy & Security

Bloatware is unwanted software pre-installed on new PCs, laptops, and mobile devices by the device manufacturer, OS developer, or network carrier. It is not usually malicious, but it uses up system resources and can therefore slow down your device.  Most software people think of as bloatware is third-party trial software that is either time-limited or […]

List of SSIDs

What is an SSID and should you hide yours?

November 18th, 2021 in Privacy & Security

An SSID is the name of a wireless network. Learn how SSIDs work, how to find your SSID, and whether it’s better to broadcast or hide it. If you set up your home WiFi network, you may have selected the network’s name (SSID) on your devices, entered the default wireless password, and connected. And that’s […]

What is PPTP?

November 5th, 2021 in Privacy & Security

The Point-to-Point Tunneling Protocol (PPTP) is a VPN protocol used to secure the connection between your device and a VPN server. One of the oldest VPN protocols, PPTP is plagued by multiple security issues and is now considered obsolete. Despite this, its broad compatibility with a huge range of legacy software and hardware, its ease […]

Should I use a VPN? – VPN benefits and limitations

June 12th, 2021 in Privacy & Security

VPNs are not only necessary for accessing geo-restricted streaming content or hiding your personal data from your internet service provider (ISP). Using a VPN increases your overall security, privacy, and freedom online, regardless of how or why you are using the internet. In short, if you’re asking yourself “should I use a VPN?”, the answer […]

Why operating system (OS) updates are important

March 11th, 2021 in Privacy & Security

Many users turn to Proton to secure their most sensitive information. Your security is our number one priority, and we employ advanced encryption in all our apps to ensure that your personal data cannot be exposed by malicious actors.  However, Proton apps, like all apps, rely on the security of your operating system (OS) to […]

Proton VPN prevents Apple apps on Big Sur exclusion list from bypassing firewall

November 17th, 2020 in Privacy & Security

Update: Apple has listened to its users, and no longer exempts its own apps from any firewall interfaces in macOS. The information in this article is therefore of purely historical interest only. The new macOS release, Big Sur, has made headlines due to Apple’s decision to place 56 of its own apps, including FaceTime, Apple […]

VPN bypass vulnerability in Apple iOS

March 25th, 2020 in Privacy & Security

UPDATE Oct. 19, 2020: Although Apple has not fixed the VPN bypass problem directly on iOS 14, they have provided the Kill Switch capability to app developers. By enabling Kill Switch, existing connections will be blocked whenever VPN is enabled. We will be adding this capability in an upcoming release of Proton VPN. UPDATE Sept. […]

Statement from Proton VPN regarding CVE-2019-14899

December 13th, 2019 in Privacy & Security

On Dec. 4, security researchers at the IT security site SecLists announced a security flaw known as CVE-2019-14899 that affects all VPNs that use the OpenVPN protocol and most VPNs that use the IKEv2/IPSec protocol In narrow circumstances. This vulnerability cannot be used for mass surveillance. It allows attackers to actively probe (or “guess”) what […]

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