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).
The China Internet Network Information Center (CNNIC), which maintains the registry for the .cn, China's country code top-level domain, has notified the public that two massive DDoS attacks have been aimed against the national Domain Name Service early on Sunday.
As cybercriminals change and improve their evasion techniques, monitoring capabilities also have to change and become more sophisticated.
The Research and Education Networking Information Sharing and Analysis Center (REN-ISAC) has issued an alert to IT security staff, and network and DNS administrators urging them to improve their network and DNS configurations to prevent their institution from being an unwitting partner in DoS attacks.