Security

Hackers disrupt Iran's rail service with fake delay messages

Iran's railroad system came under cyberattack on Friday, a semi-official news agency reported, with hackers posting fake messages about train delays or cancellations on display boards at stations across the country.

Security

Microsoft defends against new threat to Exchange

Microsoft on Tuesday moved to defend against a dangerous new threat to Exchange email servers while the fight continued against hackers taking advantage of a flaw patched last month.

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