A popular Twitter application used to measure the influence of Twitter users has been hacked and used to send spam messages. A popular Twitter application used to measure the influence of Twitter users has been hacked and used to send spam messages.Hackers broke into the Grader.com Twitter application Thursday and used it to spam the Twitter pages of people who enabled the service. Grader users found themselves sending a Twitter message that read “Biz Stone Promoting Twitter in 2006” and contained a link to a newly registered Web domain that hosted a video of Twitter co-founder Biz Stone.The hackers appear to be trying to improve the search engine ranking of the domain Seonix.org, an online money-making site, which was registered on Thursday, said Rik Ferguson, a security researcher with Trend Micro who blogged about the incident. Grader.com is a Twitter add-on that lets users measure how influential they are on the social media network. The founder of Grader.com’s parent company, HubSpot, said his company was blocking the unauthorized messages, but he could not say how the compromise occurred.“All indications are that security on one of the Grader.com applications (Twitter Grader) was compromised,” said Dharmesh Shah in an e-mail message. “As a result, an unauthorized third-party was able to post tweets on behalf of some of our users.” “We have updated the system to not allow unauthorized tweets to be sent out anymore, and are working furiously to research the issue further and make changes such that it doesn’t happen again,” he said. “Security issues are never fun and we hate that this happened. Our apologies to all of our users and those that have trusted us.” The issue was “totally our fault,” he added.Shah’s own Twitter account sent the Biz Stone spam message, as did the account used by Grader.com.Twitter users caught a break this time because the Seonix.org Web site is not malicious, according to Ferguson. If they had wanted to, the hackers could have tried to install unauthorized software such as a Trojan horse program on the machines of anyone who clicked on the Seonix.org link.It’s not clear how many people use the Grader.com service, but the company’s Twitter account is followed by more than 50,000 people.The hack shows why hackers are increasingly interested in social media and the applications that work on sites such as Twitter and Facebook. “If you can pick an app that has a lot of users and find a way in, then it’s a real big bang for the buck,” Ferguson said. Related content news Google Chrome zero-day jumps onto CISA's known vulnerability list A serious security flaw in Google Chrome, which was discovered under active exploitation in the wild, is a new addition to the Cybersecurity and Infrastructure Agency’s Known Exploited vulnerabilities catalog. By Jon Gold Oct 03, 2023 3 mins Zero-day vulnerability Vulnerabilities Security brandpost The advantages and risks of large language models in the cloud Understanding the pros and cons of LLMs in the cloud is a step closer to optimized efficiency—but be mindful of security concerns along the way. By Daniel Prizmant, Senior Principal Researcher at Palo Alto Networks Oct 03, 2023 5 mins Cloud Security news Arm patches bugs in Mali GPUs that affect Android phones and Chromebooks The vulnerability with active exploitations allows local non-privileged users to access freed-up memory for staging new attacks. By Shweta Sharma Oct 03, 2023 3 mins Android Security Vulnerabilities news UK businesses face tightening cybersecurity budgets as incidents spike More than a quarter of UK organisations think their cybersecurity budget is inadequate to protect them from growing threats. By Michael Hill Oct 03, 2023 3 mins CSO and CISO Risk Management 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