Watering hole attacks are usually associated with cyber espionage efforts and are booby-trapped with exploit kits that deliver malware onto the visitors' vulnerable computers.
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The Syrian Electronic Army has apparently managed to modify tweets from Barack Obama's official Twitter account to include links to a pro-Assad video, as well as compromise the email accounts of eight staff members of the organization that maintains his official website, and Facebook and Twitter accounts.
The websites of antivirus vendors Avira and AVG, as well as that of popular IM service WhatsApp, have been defaced by Palestinian hackers affiliated with Anonymous that go by the name "KDMS Team".
Hackers from the Syrian Electronic Army have managed to hijack, deface and / or make unavailable the websites of The New York Times, Huffington Post UK and one of Twitter domains for image serving (twimg.com).