LinkedIn breach

September 7, 2016

The Limits of SMS for 2-Factor Authentication

This post was originally published on this siteA recent ping from a reader reminded me that I’ve been meaning to blog about the security limitations of using cell phone text messages for two-factor authentication online. The reader’s daughter had received a text message claiming to be from Google, warning that her Gmail account had been locked because someone in India had tried to access her account. The young woman was advised to expect a 6-digit verification code to be sent to her and to reply to the scammer’s message with that code. Mark Cobb, a computer technician in Reno, Nev., said […]
August 2, 2018

The Year Targeted Phishing Went Mainstream

This post was originally published on this siteA story published here on July 12 about a new sextortion-based phishing scheme that invokes a real password used by each recipient has become the most-read piece on KrebsOnSecurity since this site launched in 2009. And with good reason — sex sells (the second most-read piece here was my 2015 scoop about the Ashley Madison hack). But beneath the lurid allure of both stories lies a more unsettling reality: It has never been easier for scam artists to launch convincing, targeted phishing and extortion scams that are automated on a global scale. And […]