The Hacker News Logo
Subscribe to Newsletter

The Hacker News — Cyber Security and Hacking News Website: email encryption software

GnuPG Flaw in Encryption Tools Lets Attackers Spoof Anyone's Signature

GnuPG Flaw in Encryption Tools Lets Attackers Spoof Anyone's Signature

June 15, 2018Swati Khandelwal
A security researcher has discovered a critical vulnerability in some of the world's most popular and widely used email encryption clients that use OpenPGP standard and rely on GnuPG for encrypting and digitally signing messages. The disclosure comes almost a month after researchers revealed a series of flaws, dubbed eFail , in PGP and S/Mime encryption tools that could allow attackers to reveal encrypted emails in plaintext , affecting a variety of email programs, including Thunderbird, Apple Mail, and Outlook. Software developer Marcus Brinkmann discovered that an input sanitization vulnerability, which he dubbed SigSpoof , makes it possible for attackers to fake digital signatures with someone's public key or key ID, without requiring any of the private or public keys involved. The vulnerability, tracked as CVE-2018-12020 , affects popular email applications including GnuPG, Enigmail, GPGTools and python-gnupg, and have now been patched in their latest available so
Here's How eFail Attack Works Against PGP and S/MIME Encrypted Emails

Here's How eFail Attack Works Against PGP and S/MIME Encrypted Emails

May 14, 2018Swati Khandelwal
With a heavy heart, security researchers have early released the details of a set of vulnerabilities discovered in email clients for two widely used email encryption standards—PGP and S/MIME—after someone leaked their paper on the Internet, which was actually scheduled for tomorrow. PGP and S/MIME are popular end-to-end encryption standards used to encrypt emails in a way that no one, not even the company, government, or cyber criminals, can spy on your communication. Before explaining how the vulnerability works, it should be noted that the flaw doesn't reside in the email encryption standards itself; instead, it affects a few email clients/plugins that incorrectly implemented the technologies. Dubbed eFail by the researchers, the vulnerabilities, as described in our previous early-warning article , could allow potential attackers to decrypt the content of your end-to-end encrypted emails in plaintext, even for messages sent in the past. According to the paper released
Critical Flaws in PGP and S/MIME Tools Can Reveal Encrypted Emails in Plaintext

Critical Flaws in PGP and S/MIME Tools Can Reveal Encrypted Emails in Plaintext

May 14, 2018Swati Khandelwal
Note— the technical details of the vulnerabilities introduced in this article has now been released, so you should also read our latest article to learn how the eFail attack works and what users can do to prevent themselves. An important warning for people using widely used email encryption tools—PGP and S/MIME—for sensitive communication. A team of European security researchers has released a warning about a set of critical vulnerabilities discovered in PGP and S/Mime encryption tools that could reveal your encrypted emails in plaintext. What's worse? The vulnerabilities also impact encrypted emails you sent in the past. PGP, or Pretty Good Privacy, is an open source end-to-end encryption standard used to encrypt emails in a way that no one, not even the company, government, or cyber criminals, can spy on your communication. S/MIME, Secure/Multipurpose Internet Mail Extensions, is an asymmetric cryptography-based technology that allows users to send digitally signed
Buggy Microsoft Outlook Sending Encrypted S/MIME Emails With Plaintext Copy For Months

Buggy Microsoft Outlook Sending Encrypted S/MIME Emails With Plaintext Copy For Months

October 12, 2017Swati Khandelwal
Beware, If you are using S/MIME protocol over Microsoft Outlook to encrypt your email communication, you need to watch out. From at least last 6 months, your messages were being sent in both encrypted and unencrypted forms, exposing all your secret and sensitive communications to potential eavesdroppers. S/MIME, or Secure/Multipurpose Internet Mail Extensions, is an end-to-end encryption protocol—based on public-key cryptography and works just like SSL connections—that enables users to send digitally signed and encrypted messages. According to a security advisory published by SEC Consult earlier this week, a severe bug (CVE-2017-11776) in Microsoft Outlook email client causes S/MIME encrypted emails to be sent with their unencrypted versions attached. When Outlook users make use of S/MIME to encrypt their messages and format their emails as plain text, the vulnerability allows the seemingly encrypted emails to be sent in both encrypted as well as human-readable clear text f
Germany and France declare War on Encryption to Fight Terrorism

Germany and France declare War on Encryption to Fight Terrorism

August 25, 2016Mohit Kumar
Yet another war on Encryption! France and Germany are asking the European Union for new laws that would require mobile messaging services to decrypt secure communications on demand and make them available to law enforcement agencies. French and German interior ministers this week said their governments should be able to access content on encrypted services in order to fight terrorism , the Wall Street Journal reported . French interior minister Bernard Cazeneuve went on to say that the encrypted messaging apps like Telegram and WhatsApp " constitute a challenge during investigations, " making it difficult for law enforcement to conduct surveillance on suspected terrorists. Also Read:  How to Send and Receive End-to-End Encrypted Emails The proposal calls on the European Commission to draft a law that would " impose obligations on operators who show themselves to be non-cooperative, in particular when it comes to withdrawing illegal content or decrypting me
GnuPG Email Encryption Project Relies on 'Werner Koch', and He is Running Out of Funds

GnuPG Email Encryption Project Relies on 'Werner Koch', and He is Running Out of Funds

February 06, 2015Mohit Kumar
Werner Koch , the man who authored the free email encryption software , is running out of funding to continue the development of his crucial open-source GNU Privacy Guard (GnuPG) encryption tools.The code works on plenty of operating systems from Linux and FreeBSD to Windows and OS X. The popular Gnu Privacy Guard (GnuPG or GPG) email encryption software is the same used by the former United States National Security Agency (NSA) contractor and whistleblower Edward Snowden to keep his communication secure from law enforcement authorities. GPG uses the OpenPGP standard to safeguard the communications of millions of people, including journalists, dissidents and security-minded people, around the world from eavesdroppers and other miscreants. GPG EMAIL ENCRYPTION RELIES ON THIS GUY ONLY Werner Koch has been maintaining and improving the code of his own secure email software since its initial development in 1997, and since then he has worked at very low wages, but is now
Exclusive Deals

Get Daily News Updates By Email

Join over 350,000 information security professionals — Get the best of our cyber security coverage delivered to your inbox every morning.