White Hackers

Ophcrack is an open source and free program that bypass Windows passwords by using LM hashes through rainbow tables. The Ophcrack Windows password reset is by far the fastest freeWindows 7 password hacker tool available. The program includes the ability to import the hashes from a variety of formats, including dumping directly from the SAM files of Windows. On most computers, ophcrack can crack most passwords within a few minutes .Rainbow tables for LM hashes of alphanumeric passwords are provided for free by the developers. By default, ophcrack is bundled with tables that allows it to crack passwords no longer than 14 characters using only alphanumeric characters. Available for free download are two Windows XP tables, one small and one fast, and one Windows Vista table .  Objectif Sécurité has even larger tables for purchase, intended for professional use . Larger rainbow tables contain LM hashes of passwords with all printable characters, including symbols and spaces,...

The South Korean government has reported that  electronic jamming signals  from North Korea were affecting communications and GPS signals for passenger aircraft. So far, there has not been a serious threat to safety because the pilots were able to use supplemental navigation devices. But how does a group disrupt signals from GPS or other communication systems in the first place? The simplest way to is to drown them out in a barrage of other signals, said Adrian Graham, a consultant in electronic warfare and the author of a textbook on the subject. That means sending out a radio signal over a wide range of frequencies similar to the ones that GPS uses. Because GPS signals are not that strong, barrage jamming is rather like blasting music in a room and drowning out conversation. Another method is to drown out the satellite signal by beaming a narrowband signal directly to the GPS receiver, if its location is known. NEWS: North Korea GPS Jamming Affects Flights "Ev...