Brokerage firm TD Ameritrade Holding Corp. Friday disclosed that the names, addresses, phone numbers and “miscellaneous trading” information of potentially all of its more than 6 million retail and institutional customers have been compromised by an intrusion into one of its databases.But Social Security numbers, account numbers and dates of birth, all of which were stored in the same hacked database, appear to have been left untouched, the company said today.The intrusion was discovered during an internal investigation into stock-related spam being reported by TD Ameritrade customers, said Kim Hillyer, a company spokeswoman. According to Hillyer, the investigation revealed the presence of unauthorized code, which has since been removed, on a database containing customer information.TD Ameritrade has hired fraud detection firm ID Analytics Inc. to investigate the compromise and to help monitor for fraud, she said. So far, neither TD Ameritrade nor ID Analytics has been able to unearth any evidence to show that the information was accessed for any reason other than to send spam, she said. “We do apologize for that and we do understand there may be added concern” for customers because of the incident, she said.In a statement, company CEO Joe Moglia apologized for the breach, but tried to downplay its impact. “While the financial assets our clients hold with us were never touched, and there is no evidence that our clients’ Social Security numbers were taken, we understand that this issue has increased unwanted spam, which is annoying and inconvenient for them,” Moglia said. “We sincerely apologize for that and any added concern this may have caused.” The statement also informed customers that no “special actions” were required of them with regard to their accounts as a result of the breach.The company will start notifying all its customers via postal and e-mail over the next few days, Hillyer said. By Jaikumar Vijayan, Computerworld (US online) Related content 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 Mergers and Acquisitions Mergers and Acquisitions brandpost Unmasking ransomware threat clusters: Why it matters to defenders Similar patterns of behavior among ransomware treat groups can help security teams better understand and prepare for attacks By Joan Goodchild Sep 21, 2023 3 mins Cybercrime news analysis China’s offensive cyber operations support “soft power” agenda in Africa Researchers track Chinese cyber espionage intrusions targeting African industrial sectors. By Michael Hill Sep 21, 2023 5 mins Advanced Persistent Threats Cyberattacks Critical Infrastructure brandpost Proactive OT security requires visibility + prevention You cannot protect your operation by simply watching and waiting. It is essential to have a defense-in-depth approach. By Austen Byers Sep 21, 2023 4 mins Security 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