Home Resources Blog Over Dozen Popular Email Clients Found Vulnerable to Signature Spoofing Attacks

Over Dozen Popular Email Clients Found Vulnerable to Signature Spoofing Attacks

Admin Globaldots
06.05.2019
image 1 Min read

A team of security researchers has discovered several vulnerabilities in various implementations of OpenPGP and S/MIME email signature verification that could allow attackers to spoof signatures on over a dozen of popular email clients.

The affected email clients include Thunderbird, Microsoft Outlook, Apple Mail with GPGTools, iOS Mail, GpgOL, KMail, Evolution, MailMate, Airmail, K-9 Mail, Roundcube and Mailpile.

When you send a digitally signed email, it offers end-to-end authenticity and integrity of messages, ensuring recipients that the email has actually come from you.

However, researchers tested 25 widely-used email clients for Windows, Linux, macOS, iOS, Android and Web and found that at least 14 of them were vulnerable to multiple types of practical attacks under five below-mentioned categories, making spoofed signatures indistinguishable from a valid one even by an attentive user.

Read more: The Hacker News

Learn More

What is FinOps? The Complete Guide
Cloud Cost Optimization
Nesh (Steven Puddephatt), Senior Solutions Engineer @ GlobalDots 31.05.23

While cloud-computing supports immense innovation – providing limitless resources in the pursuit of greater output and agility – public cloud end-user spending is projected to reach a staggering $600 billion this year. Hyperscale cloud vendors remain driving forces behind this growth, having proven their salt as highly strategic launchpads for digital transformation. The competition for […]

Read more
Cloud Cost Optimization: A Strategic Approach to Business Expansion
Cloud Cost Optimization
Francesco Altomare, Southern Europe Regional Manager @ GlobalDots 18.05.23

FinOps is a strategic framework designed to manage and optimize cloud costs effectively. It’s a transformative approach that brings financial accountability to the forefront of the variable spend model of cloud computing. This model allows businesses to gain a firm grip on their cloud expenses, ensuring that every dollar spent is accounted for and utilized […]

Read more
AWS Data Transfer Cost Optimization: Everything You Need to Know
Cloud Cost Optimization
Nesh (Steven Puddephatt), Senior Solutions Engineer @ GlobalDots 17.05.23

While AWS services provide a wealth of mission-critical services – storing over 2.2 trillion objects in S3 – many organizations are left floundering in the solution’s complex pricing structures. Spanning transfer types and geographies, data transfer costs can be hugely unpredictable and rapidly get out of hand.  Below, we leverage decades of industry experience to […]

Read more
Unlock Your Cloud Potential
Schedule a call with our experts. Discover new technology and get recommendations to improve your performance.
Book a Demo