Theft in cybersecurity covers stolen data, credentials, devices, and funds, often creating risks of unauthorized access, fraud, and privacy loss.
Search across headline titles and summaries.
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.
Weekly headline count for the current query.
Microsoft has observed a surge in attacks using the ACR Stealer malware to steal browser-stored passwords, authentication tokens, and sensitive documents from its enterprise customers. [...]
Cybersecurity researchers have attributed the April 2026 DigiCert security incident to a threat activity cluster dubbed CylindricalCanine
ACR Stealer, an infostealer in circulation since 2024, is walking out of enterprise networks with saved browser passwords, live session tokens, PDFs, Microsoft 365 documents, and files from synced OneDrive and SharePoint folders
U.S. prosecutors on Thursday charged a New York man and woman for their roles in a large-scale crime ring that laundered money stolen in cyber investment fraud scams. [...]
From late April 2026 to mid-June 2026, Microsoft Defender Experts observed increased ACR Stealer activity across customer environments. These campaigns are successfully using ClickFix lures to steal browser credentials, authentication tokens, and sensitive documents from enterprise environments. The post ACR Stealer: Two observed intrusion chains amid increased threat activity appeared first on Microsoft Security Blog.
A new macOS information-stealing malware dubbed ClickLock terminates all visible processes to force users into entering their system login password. [...]
A new malicious framework called OkoBot is delivering more than 20 payloads in attacks focused on stealing cryptocurrency wallet seed phrases, credentials, and other sensitive data. [...]
Cybersecurity researchers have called attention to a new modular malware called TELEPUZ that's been spreading via websites infected with ClickFix lures since late April 2026
A financially motivated Russian threat actor tracked as UAT-11795 is using trojanized software to steal credentials and cryptocurrency by deploying a new backdoor called Starland RAT. [...]
A new ransomware actor called Spirals completed a corporate intrusion, from initial access to data theft and encryption, in less than 24 hours. [...]
The Dutch Police announced the arrest of multiple individuals suspected of being part of an international investment fraud scheme estimated to have tens of thousands of victims. [...]
Five malicious versions of AsyncAPI packages were published to the Node Package Manager (npm) in a supply-chain attack that delivered a remote access trojan with info-stealing capabilities. [...]
AsyncAPI npm packages with 2M weekly downloads were compromised, spreading malware with info-stealing, crypto-theft and RAT capabilities. OX Security researchers disclosed on July 14 that the AsyncAPI npm organization was compromised, with malicious code injected into four packages that together account for over 2 million weekly downloads. The affected versions are @asyncapi/generator 3.3.1, @asyncapi/generator-components 0.7.1, […]
At least two distinct threat actors are weaponizing a novel evasion technique called OAuth client ID spoofing in cloud campaigns, while slipping past telemetry
New macOS infostealer CrashStealer uses a signed app to bypass Gatekeeper, steals credentials and wallets, then AES-encrypts stolen data. Jamf Threat Labs first spotted CrashStealer in early May 2026 as a suspicious macOS sample uploaded to VirusTotal. By early July, in-the-wild detections confirmed the malware had moved from development into active deployment. The malware is […]
Attackers whose methods line up with the data-extortion group ShinyHunters have spent the past year walking into corporate Salesforce environments without exploiting a single flaw in the platform
Lidl disclosed a third-party data breach affecting online shop customers in Germany, Belgium, and the Netherlands. Payment data was not exposed. Lidl contacted customers of its online shop in Germany, Belgium, and the Netherlands last week to inform them that their personal data had been stolen in an attack on an external IT service provider. […]
A new macOS information-stealing malware called CrashStealer pretends to be Apple's crash-reporting tool to steal credentials, keychain data, and crypto wallets. [...]
A new phishing-as-a-service (PhaaS) operation called Forg365 is using a combination of device code phishing, adversary-in-the-middle (AitM) tactics, antibot evasion, artificial intelligence (AI)-assisted lure creation, and post-compromise mailbox operations targeting Microsoft 365 accounts
Dutch police suspect local hackers behind the Odido breach that exposed 6M customers after a phishing attack and seek public help identifying them. Dutch police have identified strong indications that Dutch nationals were involved in the February 2026 cyberattack on telecom provider Odido, which resulted in data from more than six million customers being stolen […]