Hands On With HTC G1

T-Mobile and Google have announced the first-ever handset with Google’s new Android operating system. Called the T-Mobile G1, it has both full touch-screen functionality, a QWERTY keyboard, a trackball for one-handed navigation, plus access to mobile web applications like Google Maps Street View, Gmail, YouTube and more. The G1 will be available from October 22 in the US, from early November in the UK, and will roll out across Europe in early 2009.

FULL SPECIFICATIONS

DIMENSIONS 117 x 55.7 x 17.1 mm Weight 158 g

DISPLAY TFT touchscreen, 65K colors

SIZE 320 x 480 pixels, 3.2 inches

RINGTONES :   Polyphonic (40 channels), MP3, WAV,  WMA , custom download

Vibration :    Yes

Phonebook :    Practically unlimited entries and fields, Photocall Call records Practically unlimited

Card slot :   micro SD (TransFlash)

DATA GPRS :     Class 10 (4+1/3+2 slots), 32 – 48 kbps

HSCSD :      No

EDGE :      Class 10, 236.8 kbps

3G :      HSDPA, 7.2 Mbps

WLAN Wi-Fi 802.11 b/g

Bluetooth :      Yes, v2.0, headset support only

Infrared port :      No

USB :      Yes, miniUSB

OS :    Android OS

Messaging :    SMS, MMS, Email,Instant Messaging

Browser :    HTML

Games :    Yes

Colors :     White, Black, Brown

BATTERY :    Standard battery, Li-Ion 1150 mAh

Stand-by :    Up to 406 h

Talk time :    Up to 5 h 20 min

FEATURES

- 192 MB RAM, 256 MB ROM

- Qualcomm MSM7201A 528 Mhz processor

- Full QWERTY keyboard

- Trackball

- Accelerometer sensor for auto-rotate

- Handwriting recognition

- Camera 3.15 MP, 248×1536 pixels

- Built-in GPS receiver

- Digital compass

- Document viewer

- Java MIDP 2.0

- Voice memo

- MP3 player

- Built-in handsfree

Heuristic Analysis the new way of detecting unknown viruses !

Heuristic Analysis is a method employed by many computer antivirus programs designed to detect previously unknown computer viruses, as well as new variants of viruses already in the wild.
Heuristic Analysis An expert based analysis. Expert determines the susceptibility of a system towards particular threat/risk using various decision rules or weighing methods. MultiCriteria Analysis (MCA) is one of the means of weighing. This method differs with Statistical Analysis, which bases itself on the available data/statistics.

How it works ?

Most antivirus programs that utilize heuristic analysis perform this function by executing the programming commands of a questionable program or script within a specialized virtual machine, thereby allowing the anti-virus program to internally simulate what would happen if the suspicious file were to be executed while keeping the suspicious code isolated from the real-world machine. It then analyzes the commands as they are performed, monitoring for common viral activities such as replication, file overwrites, and attempts to hide the existence of the suspicious file. If one or more virus-like actions are detected, the suspicious file is flagged as a potential virus, and the user alerted.

Another common method of heuristic analysis is for the anti-virus program to decompile the suspicious program, then analyze the source code contained within. The source code of the suspicious file is compared to the source code of known viruses and virus-like activities. If a certain percentage of the source code matches with the code of known viruses or virus-like activities, the file is flagged, and the user alerted.

Its Effectiveness

Although heuristic analysis is capable of detecting many previously-unknown viruses and new variants of current viruses, the effectiveness is fairly low regarding accuracy and the number of false negatives. This is because computer viruses, just like biological viruses, are constantly changing and evolving. Since heuristic analysis mostly operates on the basis of past experience (by comparing the suspicious file to the code and functions of known viruses), it is likely to miss new viruses that contain previously unknown code or methods of operation not found in any known viruses. Fortunately, heuristic analysis is also evolving along with the viruses. As new viruses are discovered using alternative methods of detection, information about them are added to the heuristic analysis engine, thereby providing it the means to detect any new viruses based on the previously-unknown code.

Today Many of the antivirus softwares are capable of heuristic method of analysis, like Symantec ( called Blood-Hound), Mcafee , AVG , and many more..

IPv6 the next generation IP

Internet Protocol version 6 (IPv6) is a network layer for packet-switched internetworks. It is designated as the successor of IPv4, the current version of the Internet Protocol, for general use on the Internet.

The main change brought by IPv6 is a much larger address space that allows greater flexibility in assigning addresses. The extended address length eliminates the need to use network address translation to avoid address exhaustion, and also simplifies aspects of address assignment and renumbering when changing providers.

It is common to see examples that attempt to show that the IPv6 address space is extremely large. For example, IPv6 supports 2¹²⁸ (about 3.4×10³⁸) addresses, or approximately 5×10²⁸addresses for each of the roughly 6.5 billion (6.5×10⁹) people alive today.^[1] In a different perspective, this is 2⁵² addresses for every star in the known universe^[2] – more than ten billion billion billion times as many addresses as IPv4 supported.

The large number of addresses allows a hierarchical allocation of addresses that may make routing and renumbering simpler. With IPv4, complex CIDR techniques were developed to make the best possible use of a restricted address space. Renumbering, when changing providers, can be a major effort with IPv4, as discussed in RFC 2071 and RFC 2072. With IPv6, however, renumbering becomes largely automatic, because the host identifiers are decoupled from the network provider identifier. Separate address spaces exist for ISPs and for hosts, which are “inefficient” in address space bits but are extremely efficient for operational issues such as changing service providers.

The Windows vista is ready for IPv6. IPv6 addresses are normally written as eight groups of four hexadecimal digits, where each group is separated by a colon (:). For example, 2001:0db8:85a3:08d3:1319:8a2e:0370:7334 is a valid IPv6 address.