warpad

2010-06-14T11:08:00.000+07:00

A fast moving, highly progressive and exciting company located at
Tangerang with a mission to be a dominant player in sanitary napkins and
baby diapers products.

* FINANCE/ACCOUNTING STAFF

Job Description:
Handle accounting and finance

Requirements:
- Preferably Female, max. 28 years old
- Min. Bachelor Degree (S1) in Accounting
- GPA min. 3,0 from 4 scale
- Computer Literate: Ms Word, Excel, Powerpoint, ERP
- Having experience in Accounting, Finance, and IFS program are an
Advantages
- Based in TANGERANG

*TEKNISI

Job Description:
As operator or maintenance staff

Requirements:
- Male, min. 22 years old
- Degree or Diploma at least Bachelor in Industrial Engineering,
Mechanical Engineering, Electrical Engineering with IPK : 2,75 from
scale 1 to 4
- Abilities to operate MS. Office, Autocad Drawing
- Willing to work in a SHIFT working hours and to be located at factory
area in Tangerang
- Willing to work hard, fast learner and able to adapt with new working
environment

Please send your CV online via : http://www.fresgrad.com/

Or directly to our email address at: r_hrd_div@yahoo.com

*Only short-listed candidates will be contacted for interviews*

Closing date: Aug 04, 2010

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cih(computer virus)

2008-02-19T00:11:00.000+07:00

CIH, also known as Chernobyl or Spacefiller, is a computer virus written by Chen Ing Hau (陳盈豪 / Chen YingHao) of Taiwan. It is considered to be one of the most harmful widely circulated viruses, overwriting critical information on infected system drives, and more importantly, in some cases corrupting the system BIOS.

The name "Chernobyl Virus" was coined some time after the virus was already well-known as CIH, and refers to the complete coincidence of the payload trigger date in some variants of the virus (actually the virus writer's birthday) and the Chernobyl accident, which happened in Ukraine on April 26, 1986.

History

In September 1998, Yamaha shipped a firmware update to their CD-R400 Drives that were infected with the virus. In October 1998, a demo version of the Activision game SiN was infected by one of its mirror sites.^[1] In March 1999, several thousand IBM Aptivas shipped with the CIH virus,^[2] just one month before the virus would trigger.

CIH's dual payload was delivered for the first time on April 26, 1999, with most of the damage occurring in Asia. CIH filled the first 1024 KB of the host's boot drive with zeros and then attacked certain types of BIOS. Both of these payloads served to render the host computer inoperable, and for laypersons the virus essentially destroyed the PC. Technically, however, it was possible to replace the BIOS chip, and methods for recovering hard disk data emerged later.

Today, CIH is not as widespread as it once was, due to awareness of the threat and the fact it only affects older Windows 9x (95, 98, Me) operating systems.

The virus made another comeback in 2001 when a variant of the Loveletter Worm in a VBS file that contained a dropper routine for the CIH virus was circulated around the internet, under the guise of a nude picture of Jennifer Lopez.

A modified version of the virus called CIH.1106 was discovered in December 2002, but it is not a considered serious threat.

CIH is considered a threat only if it infects programs used by mass-mailing computer worms, such as Klez, or if the Anjulie Worm comes into play.

Virus specifics

CIH spreads under the Portable Executable file format under Windows 95, Windows 98, and Windows ME. CIH does not spread under Windows NT, Windows 2000, Windows XP or Windows Vista.

CIH infects Portable Executable files by splitting the bulk of its code into small slivers inserted into the inter-section gaps commonly seen in PE files, and writing a small re-assembly routine and table of its own code segments' locations into unused space in the tail of the PE header. This earned CIH another name, "Spacefiller". The size of the virus is around 1 kilobyte, but due to its novel multiple-cavity infection method, infected files do not grow at all. It uses methods of jumping from processor ring 3 to 0 to hook system calls.

The payload, which is considered extremely dangerous, first involves the virus overwriting the first megabyte (1024KB) of the hard drive with zeroes, beginning at sector 0. This deletes the contents of the partition table, and may cause the machine to hang.

The second payload tries to write to the Flash BIOS. Due to what may be an unintended feature of this code, BIOSes that can be successfully written to by the virus have critical boot-time code replaced with junk. This routine only works on some machines. Much emphasis has been put on machines with motherboards based on the Intel 430TX chipset, but by far the most important variable in CIH's success in writing to a machine's BIOS is the type of Flash ROM chip in the machine. Different Flash ROM chips (or chip families) have different write-enable routines specific to those chips. CIH makes no attempt to test for the Flash ROM type in its victim machines, and has only one write-enable sequence.

For the first payload, any information that the virus has overwritten with zeros is lost. If the first partition is FAT32, and over about one gigabyte, all that will get overwritten is the MBR, the partition table, the boot sector of the first partition and the first copy of the FAT of the first partition. The MBR and boot sector can simply be replaced with copies of the standard versions, the partition table can be rebuilt by scanning over the entire drive and the first copy of the FAT can be restored from the second copy. This means a complete recovery with no loss of user data can be performed automatically by a tool like Fix CIH.

If the first partition is not FAT32 or is smaller than 1GB the bulk of user data on that partition will still be intact but without the root directory and FAT it will be difficult to find it especially if there is significant fragmentation.

If the second payload goes off without a hitch, the computer will not start at all. A technician is required to reprogram or replace the Flash BIOS chip, as most systems that CIH can affect predate BIOS restoration features.

CIH v1.2/CIH.1103

This variant is the most common one and activates on April 26. It contains the string: CIH v1.2 TTIT.

CIH v1.3/CIH.1010A and CIH1010.B

This variant also activates on June 26. It contains the string: CIH v1.3 TTIT.

CIH v1.4/CIH.1019

This variant acts on the 26th of any month. It is still in the wild, although it is not that common. It contains the string CIH v1.4 TATUNG.

CIH.1049

This variant activates on August 2 instead of April 26.

CIH.110664

This is a minor, fairly recent variation that appeared on December 2002.

CIH.110007

The CIH got a new look, while scanning the security holes inside the Windows Networks. Windows XP got prone to it when some people disliked the windows validation tool. CIH caused IP Conflicts, Font removal, System Netbios Conflicts on the many windows xp/server systems. From a report by astalavista group, this can infect network systems because many anti-virus software are unaware of this type of virus, and it actually does not harm a system, but prompt conflicts on port 139 of the windows systems.

Removal

Most antivirus software will recognize and remove CIH. However, CIH has a lasting legacy even after infected files have been cleaned, whether or not the payload was delivered. Due to its infection mechanism, most antivirus software can deactivate the virus but cannot completely clean infected files. This has certain ramifications. First, infected files cannot be restored to their original state, and will therefore produce different hashes or checksums than the original file, which could cause the file to fail integrity checks. Secondly, because the virus signature is still present within the file, the antivirus software will continue to flag infected files, usually as "CIH (inactive)" or some variation thereof. The only way to be completely rid of CIH remnants is to replace the affected files with copies of untouched originals. For systems that were thoroughly infected, this likely entails a complete reinstallation of the operating system and software.

hacker

2008-02-19T00:08:00.001+07:00

is a person who delights in having an intimate understanding of the internal workings of a system, computers and computer networks in particular, as defined by Request for Comments (RFC) 1392 [1]. More specifically, there are several different hacker subcultures:

People engaged in circumvention of computer security. This primarily refers to unauthorized remote computer break-ins via a communication network such as the Internet (black hats), but also includes those who debug or fix security problems (white hats). Its earliest known meaning in the computer context^[1] referred to an unauthorized user of the telephone company network (now called a phreaker).
A community of enthusiast computer programmers, originated in the 1960s around the the Massachusetts Institute of Technology (MIT)'s Tech Model Railroad Club (TMRC) and MIT Artificial Intelligence Laboratory. This community is notable for launching the free software movement. The World Wide Web and the Internet itself are also considered to be hacker artifacts. [2]
The hobbyist home computing community of the late 1970s, focusing on both hardware (e.g. the Homebrew Computer Club) and software (the demoscene).

Nowadays, mainstream usage mostly refers to computer criminals, due to the mass media usage of the word since the 1980s. Unlike the definition in the RFC given above, this includes script kiddies, people breaking into computers using programs written by others, with very little knowledge about the way they work. Free software hackers consider this usage incorrect, and refer to security breakers as crackers.

History in Computer Science

2008-02-19T00:06:00.001+07:00

A "hack" now means a clever or quick fix to a computer program problem, as in "That hack you made last night to the editor is working well". A hacker came into the lexicon as meaning one who hacks, using this definition. The surface implication (which might be a modest mocking and play on the literary definition) was a casual attempt to fix the problem, but the deeper meaning was something more clever and thus impressive.

It was used especially among US university computing center staff, such as those at Stanford in the period beginning approximately in the mid-1960s. The context determined whether the complimentary or derogatory meanings were implied. Phrases such as "ugly hack" or "quick hack" generally referred to the latter meaning; phrases such as "cool hack" or "neat hack" referred to the former.

In modern computer programming, a "hack" can refer to a solution or method which functions correctly but which is "ugly" in its concept, which works outside the accepted structures and norms of the environment, or which is not easily extendable or maintainable (see kludge).

In a similar vein, a "hack" may refer to works outside of computer programming. For example, a math hack means a clever solution to a mathematical problem. The GNU General Public License has been described as a copyright hack because it cleverly uses the copyright laws for a purpose the lawmakers did not foresee. All of these uses now also seem to be spreading beyond MIT as well.

The term has since acquired an additional and now more common meaning, since approximately the 1980s; this more modern definition was initially associated with crackers. This growing use of the term "hack" is to refer to a program that (sometimes illegally) modifies another program, often a computer game, giving the user access to features otherwise inaccessible to them. As an example of this use, for Palm OS users (until the 4th iteration of this operating system), a "hack" refers to an extension of the operating system which provides additional functionality. The general media also uses this term to describe the act of illegally breaking into a computer, but this meaning is disputed. The term is additionally used to refer to attempts to gain low-level access to hardware such as a graphing calculator, video game console, or other device (see CueCat for a notorious example) to expose or add functionality to a device that was unintended for use by end users by the company who created it. While it is generally accepted as a way of creating additional markets for such devices (and software as well), companies take different and sometimes inconsistent attitudes towards such practices, ranging from open acceptance (such as Texas Instruments for its graphing calculators and Lego for its Lego Mindstorms robotics gear) to outright hostility (such as Microsoft's attempts to lock out Xbox hackers or the DRM routines on Blu-Ray players designed to sabotage compromised players). Such activity is generally considered to exist in a legal gray area.

Sometimes the jargon used by hackers is thought of as a language in its own right, called Hackish (see the Jargon file). This should not be confused with "1337" or "leetspeak."

hack

2008-02-18T23:57:00.000+07:00

A Hack is usually a technique used to subvert, misuse or subtly change a program, gadget or mechanism in such a way as to change, or add to, its functionality.

Hack has several meanings in the technology and computer science fields: a clever or quick fix to a computer program problem; a clumsy or inelegant solution to a problem; or a modification of a program or device to give the user access to features that were otherwise unavailable to them.

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2008-02-17T21:16:00.000+07:00

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