'They got into everything,' one official says as federal authorities express growing alarm over breadth and depth of intrusion into government networks, likely by Russian actors

Incident follows more serious April attack attributed to Iran that officials said could have poisoned hundreds with chlorine

Western official says April hack aimed to raise chlorine to dangerous levels; Israeli official says attack began tit-for-tat on civilian targets

Yigal Unna says attempted hacking into civilian systems, widely ascribed to Iran, marked a historic first, and could have resulted in disaster had it not been detected in time

Sources tell news agency that as pandemic rages, state actors use phishing techniques to try to gain access to personal accounts of staff

'It was the intelligence coup of the century': From end of World War II until early 21st century, Crypto AG said used to spy on some 120 countries while bringing in millions

Social media firm also links IP addresses in Malaysia to software bug allowing phone numbers to be accessed without permission

Company notified users that 'advanced cyber actor' may have breached their devices, including Islamic State suspect under investigation by officials working with Israel's NSO Group

Popular video-sharing app forbidden on base or during operations, agency says, citing 'security risks' and harm to its 'values and image'

Local authorities concerned over presence of a $9 million signals intelligence van, owned by ex-IDF intelligence officer and WiSpear CEO Tal Dillian, on their territory