Hacker leaks Telefónica data allegedly stolen in a new breach
A hacker is threatening to leak 106GB of data allegedly stolen from Spanish telecommunications company Telefónica in a breach that the company did not acknowledge. [...]
Theft in cybersecurity covers stolen data, credentials, devices, and funds, often creating risks of unauthorized access, fraud, and privacy loss.
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Background for this topic.
Unauthorized taking or copying of information, credentials, intellectual property, or digital assets is cyber theft. News under this tag may involve stolen passwords, payment data, personal information, source code, cloud tokens, cryptocurrency, or sensitive business files. Theft can result from phishing, malware, compromised accounts, insider access, exposed storage, or the loss of an unencrypted device; the relevant issue is the unauthorized acquisition or control of an asset, whether or not the attacker also alters systems.
Security teams should identify where valuable data and credentials are stored, restrict access by role, require strong authentication, encrypt data at rest and in transit, and monitor unusual downloads or transfers. Vulnerability management matters when flaws expose databases, endpoints, or cloud services to unauthorized retrieval. After suspected theft, preserving logs, revoking tokens and credentials, determining what was accessed or copied, and assessing privacy or notification obligations are central to containing the incident and measuring its impact.
A hacker is threatening to leak 106GB of data allegedly stolen from Spanish telecommunications company Telefónica in a breach that the company did not acknowledge. [...]
The Spanish police have dismantled a large-scale investment fraud operation based in the country, which has caused cumulative damages exceeding €10 million ($11.8M). [...]
IdeaLab is notifying individuals impacted by a data breach incident last October when hackers accessed sensitive information. [...]
North Korean state-backed hackers have been using a new family of macOS malware called NimDoor in a campaign that targets web3 and cryptocurrency organizations. [...]
The Spanish police have arrested two individuals in the province of Las Palmas for their alleged involvement in cybercriminal activity, including data theft from the country's government. [...]
More than 40 fake extensions in Firefox's official add-ons store are impersonating popular cryptocurrency wallets from trusted providers to steal wallet credentials and sensitive data. [...]
Esse Health, a healthcare provider based in St. Louis, Missouri, is notifying over 263,000 patients that their personal and health information was stolen in an April cyberattack. [...]
Building automation giant Johnson Controls is notifying individuals whose data was stolen in a massive ransomware attack that impacted the company's operations worldwide in September 2023. [...]
The government in Switzerland is informing that sensitive information from various federal offices has been impacted by a ransomware attack at the third-party organization Radix. [...]
The Federal Bureau of Investigation (FBI) has warned Americans of cybercriminals impersonating health fraud investigators to steal their sensitive information. [...]
Vulnerabilities affecting a Bluetooth chipset present in more than two dozen audio devices from ten vendors can be exploited for eavesdropping or stealing sensitive information. [...]