Customers of Telstra, Macquarie Telecom, and iiNet may have been compromised. The aftermath of the RSA SecurID token attack which occurred in March and led to the replacement of thousands of tokens, has continued with the revelation that customers of Australian Internet service providers (ISPs), including Telstra and iiNet, may have been compromised.This was because hackers used the same command and control techniques that infiltrated RSA to target 760 companies around the world.US-based security blogger, Brian Krebs, who has compiled a list of the companies targeted, wrote that many of the network owners listed are ISPs and were included because some of their subscribers were hit.“It is not clear how many systems in each of these companies or networks were compromised, for how long those intrusions persisted, or whether the attackers successfully stole sensitive information from all of the victims,” Krebs wrote. “Finally, some of these companies, such as the anti-virus vendors, may be represented because they intentionally compromised internal systems in an effort to reverse engineer malware used in these attacks.”RSA president, Tom Heiser, recently said the attacks were sophisticated: they used advanced techniques to connect to RSA’s systems and used different malware, some of which was compiled just hours before an attack. The information stolen was compressed and encrypted before it was exfiltrated, making it more difficult to identify. The two hacker groups stole specific information about SecurID, but RSA has declined to explain what was stolen.In August, RSA’s ANZ general manager, Andy Solterbeck, told Computerworld Australia that the attack was committed by a nation state and that it was still a few months away from replacing all of the SecurID tokens in the Australian marketplace.The company has offered large customers, such as ANZ Banking Group, an early renewal of their contracts along with new devices, while smaller users were able to get free contract extensions. It has also offered to help with risk mitigation.Got a security tip-off? Contact Hamish Barwick at hamish_barwick at idg.com.auFollow Hamish Barwick on Twitter: @HamishBarwickFollow Computerworld Australia on Twitter: @ComputerworldAU Related content 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 Intrusion Detection Software Intrusion Detection Software 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 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 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