The "external sender" warnings shown to email recipients by clients like Microsoft Outlook can be hidden by the sender, as demonstrated by a researcher. Turns out, all it takes for attackers to alter ...

New research shows that up to a half of all HTML email attachments are malicious, and not just because of a few massive campaigns. Researchers warn that attackers are relying more on malicious HTML ...

A new targeted phishing campaign includes the novel obfuscation technique of using Morse code to hide malicious URLs in an email attachment. Samuel Morse and Alfred Vail invented morse code as a way ...