But I doubt many customers will give up on plastic as a result of the hacker attack.
The hacker attack at the Black Hat security conference Thursday took even the most jaded security experts by surprise.
Citi revealed the hacker attack, which it detected a month ago, to the Financial Times after the paper made inquiries.
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What it means for you: Even if your company seems to be too small to be targeted by a state-sponsored hacker attack, now is a good time to beef up your digital security, in case the situation gets worse.
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In a statement made Tuesday, Sony spokesman Satoshi Fukuoka said the company was planning to revive its online gaming network by the end of this month, and confirmed that personal data from 24.6 million user accounts had been stolen in a hacker attack last month.
When it first hit, it was a "zero-day attack, " in hacker parlance.
Sony has yet to offer more information on how its breach occurred or who might be responsible, although it has controversially hinted that the hacker collective Anonymous may be behind the attack.
But patching the vulnerabilities used for mass infections of sites, which often use automated tools to spread malware among thousands of targets, is very different from patching every vulnerability a hacker could possibly use for a targeted attack on a single victim site.
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Twitter said the site's blackout was caused by a "denial-of-service attack, " which likely means a hacker used a number of infected computers to send enough automated requests to the site to overwhelm it.
Last year, when a Web site launched by infamous hacker group LulzSec was knocked offline by a massive DDoS attack it turned to CloudFlare, a 30-person San Franicisco start-up for protection.
The most common passwords on Christian blogging site Faithwriters included words like jesuschrist, heaven, christ, and blessed, all easy enough to guess for a hacker to guess or even easier to find with a dictionary attack that cycles through millions of word variants.
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On Sunday, a computer hacker who calls himself "The Jester" claimed responsibility for the cyber attack that affected WikiLeaks.
One of the most common styles of attack on small businesses targets credit-card information that a hacker can sell or use to make fraudulent purchases.
The hacker's mischief-making was double-pronged: affected computers were meant to attack the Microsoft website that offered the free patch on August 16th.
One of the most startling was the attack on the global intelligence firm Stratfor over Christmas, for which members of the loose-knit hacker group Anonymous claimed responsibility.
For Apple, the attack represents not just a corporate security issue but a rare confirmation that its consumer products are vulnerable to hacker attacks.
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