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. [...]

A sophisticated malicious campaign that researchers call OneClik has been leveraging Microsoft's ClickOnce software deployment tool and custom Golang backdoors to compromise organizations within the energy, oil, and gas sectors. [...]

A cybersecurity researcher has developed FileFix, a variant of the ClickFix social engineering attack that tricks users into executing malicious commands via the File Explorer address bar in Windows. [...]

Russian hackers bypass multi-factor authentication and access Gmail accounts by leveraging app-specific passwords in advanced social engineering attacks that impersonate U.S. Department of State officials. [...]

In a rather clever attack, hackers leveraged a weakness that allowed them to send a fake email that seemed delivered from Google's systems, passing all verifications but pointing to a fraudulent page that collected logins. [...]