????小心黑客！隨著科技的進步，人們可能認為網絡安全性也在與日俱增。不過事實并非如此。如果歷史有什么值得借鑒的地方，那就是被黑客襲擊（甚至反復襲擊）總是難以避免。光是上個星期，就有兩家公司不幸中招：先是俄羅斯黑客在網上公布了600萬名商務社交網站LinkedIn用戶的密碼，然后eHarmony也遭到了手法類似的網絡襲擊，很有可能是同一撥人所為。現在，我們就來回顧一下過去十年里最嚴重的幾起網絡安全事件。

????Beware the hacker. As technology evolves, one would think security is keeping up. Not exactly. If history is anything to go by, getting hacked -- sometimes more than once -- is inevitable. In the last week alone, two tech companies came under fire when Russian hackers reportedly published 6 million LinkedIn user passwords; eHarmony experienced a similar cyber attack, possibly by the same group. Here's a look at some of the biggest security breaches over the last 10 years.