Sunday, March 29, 2009

What is Heuristic?

Many people ever heard about Heuristic detection or in other name some security product called it TruPrevent, AHeAD as well as Portable Antivirus called it Alternator Heuristic Technology (AHT). In simple word, Heuristic technology is a method to determine if the program is similar to the previous detection of common viruses.

Here it is a good explanation about Heuristic taken from Wikipedia:

Heuristic (/hju??r?s.t?k/) is an adjective for methods that help in problem solving, in turn leading to learning and discovery. These methods in most cases employ experimentation and trial-and-error techniques. A heuristic method is particularly used to rapidly come to a solution that is reasonably close to the best possible answer, or 'optimal solution'. Heuristics are "rules of thumb", educated guesses, intuitive judgments or simply common sense. Heuristics (hyu-?ris-tiks) as a noun is another name for heuristic methods.

In more precise terms, heuristics stand for strategies using readily accessible, though loosely applicable, information to control problem solving in human beings and machines.[1] Forensic engineering is an important tool in tracing defects in products and processes. The Heuristic Model or commonly referred to as the (gut-level approach) is a simplified method of decision making that put emphasis on internal personality attributes of the decision maker.

There is several way for making Heuristic detection:

  1. Detecting double extension file
  2. Detecting based on PE-Section hash
  3. Detecting based on Resource Section
  4. Detecting based on Compression method
  5. Detecting based on String
  6. Detecting based on API
and many more...

Friday, March 20, 2009

Data0.Net Problem?

Well, there was almost 2 weeks already that my domain went down. But this is not affected to all country and area. I was informed that TMNet was trying to do something with undersea cable that connected to the Europe. Data0.Net was currently hosted at Datacenter located in Frankfurt, Germany.

I was reported that a few major domain also affected such as,, and so on.

Friday, March 6, 2009 Web Hoster!

Well, after a few weeks i'm keep monitoring this web hoster. It seem that this provider should take care very much about their server since there is many domain shared into one server. This because the server always down 3-4 times a weeks and sometime 1 time a day. It may take around 1-3 hours downtime.

As we can see below, the picture that cause of server down.

It seem someone from the shared hosting use lot of memory that may cause of the server down and all people on the shared domain loose their advantaged with unfair usage. AND, its keep low. I don't know how much domain name parked on this server.

Little detailed:

The main datacenter seem located at Frankfurt, Germany.

Here it is a few domain name list known shared with and
Some of the website listed above is already change their server due to the lack of server response.