The claimed exposure could support phishing, account-targeting, and vulnerability exploitation because support tickets may include customer details and technical issues. This will help ensure a timely and effective response during a breach and can minimise the potential impact on your company. Make sure to regularly review and update the plan to account for any changes in technology or processes. Purchasing cyber insurance can provide financial protection and risk mitigation in the event of a data breach.

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Unlike traditional ransomware operators, RansomHouse focuses on extortion without encrypting files, threatening to release stolen information if victims refuse to pay. The group has been linked to several Russia-aligned threat actors, including Alphv/BlackCat, LockBit 3.0, and RagnarLocker. An attacker used social engineering on the phone to gain credentials, then reached systems holding donor records, event attendance data, and contact details including email, phone, and home addresses. Hackers stole Salesforce-hosted data linked to more than 200 companies after compromising third-party apps developed by Gainsight. Salesforce reported unauthorized access to customer environments that originated from external application connections rather than flaws in its platform.

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This data exposure was discovered by security expert Vinny Troia, who indicated that the breach included data on hundreds of millions of US adults and millions of businesses. In June 2013 around 360 million MySpace accounts were compromised by a Russian hacker, but the incident was not publicly disclosed until 2016. The information that was leaked included account information such as the owner’s listed name, username, and birthdate. Between 2013 and 2016, anyone who gained access to this breached information could have taken over any Myspace account. The former social media network giant has since invalidated all passwords belonging to accounts that were set up prior to 2013.

Data Breaches that Occurred in May 2025

It’s speculated that the cybercriminal group gained access through an unauthorized API endpoint, meaning https://www.electionsscotland.info/the-5-rules-of-and-how-learn-more/ a user/password or any other authentication method wasn’t required to connect to the API. The records exposed the contact information of former hotel guests including Justin Bieber, Twitter CEO Jack Dorsey, and government officials. Hacking group identified as Impact Team compromised 35 million user records from the cheating website Ashley Madison. Youku a Chinese video service exposed 92 million unique user accounts and MD5 password hashes. Experian suffered another breach in 2020, when a threat actor claiming to be Experian’s client convinced staff to relinquish customer information for marketing purposes.

What to do if my data is compromised in a third-party breach?

DBS reported that approximately 8,200 client statements might have been exposed, mainly affecting its trading platform DBS Vickers and cashline loan accounts. The Tea anonymous dating advice app has suffered a data breach far larger than initially reported. The incident involved access to more than 1.1 million private direct messages exchanged between users from February 2023 to July 2025. These messages contained highly sensitive conversations on topics such as divorce, abortion, cheating, and rape. French telecommunications giant Orange SA confirmed a ransomware attack that led to the theft and publication of business customer data on the dark web. The incident, reported to national authorities at the end of July, involved ransomware linked to a group calling itself Warlock.

• Highly sensitive PII, including customer names, Social Security numbers, and addresses, was compromised.
• In some cases, employees might inadvertently or intentionally cause data breaches.
• Lost proprietary knowledge, remediation expenses and damaged customer trust can add up to serious, if not catastrophic, fallout.
• Employee training is crucial in creating a security-conscious culture within the organisation.
• The NBI worked with Estonian authorities and plans to submit the case to prosecutors on May 19, 2025.
• A massive dataset known as “Synthient Stealer Log Threat Data” was added to Have I Been Pwned, containing about 183 million unique email accounts with passwords stolen from infected devices.

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One key aspect of preventing data breaches is effective security measure updates. By staying proactive and regularly updating systems, organisations can stay ahead of potential vulnerabilities and emerging threats. Security measure updates involve patching software, implementing the latest security protocols, and ensuring all systems are up to date. Network segmentation is vital in reducing attack surfaces by dividing networks into smaller, more secure segments.

Bright Defense can help software companies test vendor access paths and validate compliance controls before third-party support environments become breach entry points. Bright Defense can help education vendors test SaaS integrations and compliance controls before misconfigured customer-facing systems expose user data. One fundamental strategy for enhancing preparedness is establishing a dedicated breach response team responsible for incident management and communication. This team should consist of individuals with diverse skills, from IT experts to legal advisors, to ensure a holistic approach.

Organizations are already struggling to remediate vulnerabilities, with the Verizon data breach investigations report finding that organizations successfully remediate only 26% of KEV vulnerabilities. Adding to this concern, the DBIR points out that there has been a nearly 50% increase in the number of CISA KEV vulnerabilities to patch in 2025, putting even more pressure on security teams. According to a notice submitted to Maine’s Attorney General, the breach led to “unauthorized securities transactions and financial transfers” in some clients’ accounts. A Data Breach Management Plan is more than a legal requirement—it’s an essential component of your organisation’s risk management strategy. By following these steps and tips, you’ll be better prepared to handle data breaches efficiently and effectively.