HomeTom - CS
Showing posts with label
Security
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Showing posts with label
Security
.
Show all posts
Tuesday, July 16, 2013
Break captcha in Chinese
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Most captchas are in English/numbers. Here is an interesting video on how to break captchas in Chinese . The key is this writing recogniti...
Friday, April 20, 2012
ACM classic - Reflections on Trusting Trust
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Reflections on Trusting Trust , by Ken Thompson. See how Ken Thompson implanted a back door into unix by hacking the compiler.
Friday, October 1, 2010
SQL Injection Attack
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One of the servers is hacked. The symptom is that javascript code were inserted into some database tables. When users visit the site, the ja...
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