Facebook has fixed a flaw that let hackers delete Facebook friends without permission. Facebook has fixed a flaw that let hackers delete Facebook friends without permission.The flaw was reported Wednesday by Steven Abbagnaro, a student at Marist College in Poughkeepsie, New York. It was patched Friday afternoon, Pacific time, after the IDG News Service notified Facebook of the issue.The bug was a variation of an earlier vulnerability that Facebook learned about last week, which affected a range of features on the Web site. Hackers could have leveraged Abbagnaro’s bug to delete all of a victim’s contacts, one by one, but it does not appear that anyone ever exploited it in a malicious way.For Abbagnaro’s attack to work, however, a user would have to have been tricked into clicking on a malicious Web link while still logged into Facebook. Facebook has struggled this week to fix these bugs, which are called cross-site request forgery flaws. They exist because of relatively simple Web programming mistakes in the Web site’s code, and security researchers have criticized Facebook for not fixing them more quickly.“We’re in the process of doing a full audit and are building additional protections for this type of potential attack across the code base,” said Simon Axten, a Facebook spokesman, in a Friday e-mail interview. “We began working on this one as soon as we learned about it and pushed a fix early this afternoon.” Robert McMillan can be reached at robert_mcmillan@idg.com. He is on Twitter at: https://twitter.com/bobmcmillan Related content news analysis DHS unveils one common platform for reporting cyber incidents Ahead of CISA cyber incident reporting regulations, DHS issued a report on harmonizing 52 cyber incident reporting requirements, presenting a model common reporting platform that could encompass them all. By Cynthia Brumfield Sep 25, 2023 10 mins Regulation Regulation Regulation news Chinese state actors behind espionage attacks on Southeast Asian government The distinct groups of activities formed three different clusters, each attributed to a specific APT group. By Shweta Sharma Sep 25, 2023 4 mins Advanced Persistent Threats Cyberattacks feature How to pick the best endpoint detection and response solution EDR software has emerged as one of the preeminent tools in the CISO’s arsenal. Here’s what to look for and what to avoid when choosing EDR software. By Linda Rosencrance Sep 25, 2023 10 mins Intrusion Detection Software Security Monitoring Software Data and Information Security feature Top cybersecurity M&A deals for 2023 Fears of recession, rising interest rates, mass tech layoffs, and conservative spending trends are likely to make dealmakers cautious, but an ever-increasing need to defend against bigger and faster attacks will likely keep M&A activity steady in By CSO Staff Sep 22, 2023 24 mins Mergers and Acquisitions Data and Information Security IT Leadership Podcasts Videos Resources Events SUBSCRIBE TO OUR NEWSLETTER From our editors straight to your inbox Get started by entering your email address below. Please enter a valid email address Subscribe