Russian security company Kaspersky Lab's Web site for Malaysia was defaced on Saturday along with one of its online shopping sites, according to Zone-H, an organization that documents such attacks.
The attacker, nicknamed "m0sted," wrote that the site was compromised through SQL injection, wrote Roberto Preatoni on a Zone-H posting.
The attack involves inputting code into a form on a Web page in an attempt to get the back-end database to respond. It can enable the hacker to gain control over the Web site.
Kaspersky has since locked down the site, which is apparently running Microsoft's Internet Information Services Web server. The site is no longer open to the public and requires a user name and password for access.
Images of the hack posted on Zone-H show repeated subjects in the left-hand news section reading "hacked by m0sted and amen Kaspersky Hax0red No War." Other secondary pages were also compromised, Preatoni wrote.
Kaspersky could not be immediately reached for a comment. But Preatoni said that while the attacks appear to be just vandalism, there could be more serious risks.
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