search for: evildoer

...ile allocation tables, I noticed that if a FAT volume (eg. a floppy) with looped allocation chain is being read under Linux, the system stops responding and cannot be recovered to a working state without a hardware rebooting. This bug is not-so-useful for performing Denial-Of-Service attacks (if an evildoer managed to put a floppy into your computer, why won''t he just press the power switch?), although he can leave a modified floppy on your desk. It is sufficient to just ls that floppy. Sample exploit is at http://rainbow.mimuw.edu.pl/~ab171958/FAT.html#Linux I tested this exploit on kernel...

SECURITY QUESTION & SANITY CHECK: If only my SIP ports and a small range of RTP ports are facing the public internet, what is the method by which an evildoer would be able to do fraudulent long distance on my nickel? Would it REALLY be as simple as guessing the credentials for ANY of my local sip endpoints? Like most people, my local endpoint credentials would be easy to guess: Username is often just an extension number (101,2,3 etc), passwords ar...