Emirati cybersecurity czar says attacks targeting financial sector, but doesn't elaborate on their nature or source

Group, not in American custody, targeted French election, Ukraine, Olympics; was behind 'most disruptive and destructive series of computer attacks ever attributed to single group'

ClearSky, Profero say they thwarted hacking attempts by IRGC contractors, but warn that methods could've been used in previously unnoticed hacks targeting Jewish state

Officials claim electronic assault perpetrated by 'sworn enemies' who failed to achieve their goals through sanctions

State media says assault did not cause significant damage but some other departments temporarily took down online services as precaution

Government spokesman asserts no significant damage caused; unconfirmed reports say Iranian ports, banking system also targeted

Firm says it's working with law enforcement officials and experts after systems were attacked

Experts see such a cyberattack as realistic probability ahead of November; officials warn that single employee falling for spearphishing attack could compromise systems

The sanctions, including a travel ban and asset freeze, mark the first time that Brussels has used such measures to retaliate for online aggression

Foreign Ministry spokesman says US is the main suspect unless proven otherwise, Tehran reserves right to take retaliatory action