Archive for July, 2010

Spam continues to flood most of our inboxes despite the numerous filters used to check them. One of the big reason for this is the growth in malicious botnets. So as many of us know Botnets are command-and-control systems used by cyber criminals to send spam into our email boxes. Bots are one of the most sophisticated and popular types of cybercrime today. They allow hackers to take control of many computers at a time, and turn them into “zombie” computers, which operate as part of a powerful “botnet” to spread viruses, generate spam, and commit other types of online crime and fraud. This example illustrates how a botnet is created and used to send email spam.

Botnet Illustration

Botnet Illustration

1) A botnet operator sends out viruses or worms, infecting ordinary users’ computers, whose payload is a malicious application—the bot.

2) The bot on the infected PC logs into a particular C&C server (often an IRC server, but, in some cases a web server).

3) A spammer purchases the services of the botnet from the operator.

4) The spammer provides the spam messages to the operator, who instructs the compromised machines via the IRC server, causing them to send out spam messages.

Recently a M86 Security recently released ‘Top Ten Most Wanted’ spam-spewing Botnets list. Let’s take a look at this week blog post..

    Rustock(43%)

Rustock’s malware employs a kernel-mode rootkit, inserts random text into spam and is capable of TLS encryption. Concentrates solely on pharmaceutical spam.

    Mega-D(10.2%)

This long-running botnet has had its ups and downs, owing to the attention it attracts from researchers. Concentrates mostly on pharmaceutical spam.

    Mega-D(10.2%)

This spambot employs a kernel mode rootkit and is often installed alongside Pushdo on the same host.

    Pushdo(6.3%)

This is a multi-faceted botnet with many different types of campaigns. A major distributor of malware downloaders and blended threat e-mails, but also sends pharma, replica, diploma and other types of spam.

    Grum(6.3%)

This too uses a kernel-level rootkit. Grum employs a range of spamming templates that change often, served up by multiple Web servers. Mostly pharma spam.

    Lethic(4.5%)

The malware acts as a proxy by relaying SMTP from a remote server to its destination. This too is largely pharma and replica spam.

    Bobax(4.3%)

Another old timer, this botnet employs sophisticated methods to locate its command servers.

    Bagle(3.5%)

Bagle gets its name from an earlier mass-mailing worm. This Bagle variants act as proxies for data, and especially spam

    Maazben(2.0%)

Maazben uses a proxy-based spam engine. In certain cases it may also use a template-based spam engine if the bot runs behind a network router. The botnet specialises in Casino spam.

    Donbot(1.3%)

Donbot is named after the string “don” found in the malware body. This too is largely pharma spam. “Other” spambots account for 10.7% of all spam.

    Protect Against Bots:

To safeguard against malicious bots, here is my advice:

— Install top-rated security software (such as Avast or Norton 360).
— Configure your software’s settings to update automatically.
— Increase the security settings on your browser.
— Limit your user rights when online.
— Never click on attachments unless you can verify the source.
— Ensure that your system is patched with the most current Microsoft Windows Update.
— Set your computer’s security settings to update automatically, to
ensure you always have the most current system patches.

Advertisements

Have you ever spent hours on a document only to have the power go out, discover that you failed to save your work and lose everything you’d worked on? Have you ever turned on your computer to find that a virus has wiped much of your hard drive clean? Perhaps you’ve even deleted an email out of your trash bin only to find that you desperately needed the information within it for work? All of these are very real problems and data recovery software is an equally real solution for all of them. So In today’s blog I will review the best 5 software that will help you restore your data that was deleted by mistake even from your recycle bin..

Data Recovery Tools

Data Recovery Tools

1) Recuva (Windows)

Number 1 on the list is “Recuva” a freeware utility that allows you to restore files that have been accidentally deleted from your computer. It not just restore your deleted files from the recyle bin but also your digital camera memory cards and MP3 players. The file-recovery wizard is handy when you’re sure your data is gone but you’re not quite sure where it went or how to get it back. The wizard lets you narrow your search type to pictures, music, documents, video, or all files, and you can set the search location to everywhere on your computer, removable media only, in My Documents, the Recycle Bin, or a specified location. If you don’t need the wizard you can jump right into manual mode and get to work searching where you know the file should be. Recuva uses a green/yellow/red light system to indicate how probable the recovery of your files will be, and when available, it can provide previews image files available for recovery. Recuva also includes a tool to securely wipe files you find, handy if you’re attempting a file recovery just to ensure the files are actually dead and gone.

null

Here are some of the key Features of this tool:

— Undelete files on your computer
— Recovery from damaged or formatted disks
— Recover deleted emails
— Recover deleted iPod music
— Restore unsaved Word documents
— Quick-Start Wizard
— Deep Scan to look for more deeply-buried results.
— Securely delete files you want to erase forever
— Portable version
— Full Windows OS and 37+ languages support

2) TestDisk (Windows/Mac/Linux)

null

TestDisk is a powerful open-source tool for recovering your data. Not only can TestDisk perform basic file recovery like undeleting accidentally deleted files from FAT, NTFS, and ext2 file systems, but it comes with a host of additional functionality. With TestDisk you can recover your boot sector from a backup, rebuild your boot sector, fix FAT tables, fix your MFT, locate the ext2/ext3 backup SuperBlock, copy deleted files from partitions to recovery media, and find lost partitions in dozens of formats to help you locate your lost data. It’s a command line tool, so there’s no GUI, but the menus and the documentation in the wiki should get you started without much trouble. Use Photorec program with Testdisk for maximum efficiency…

null

Here are some of the key Features of this tool:

— Fix partition table, recover deleted partition
— Recover FAT32 boot sector from its backup
— Rebuild FAT12/FAT16/FAT32 boot sector
— Fix FAT tables
— Rebuild NTFS boot sector
— Recover NTFS boot sector from its backup
— Fix MFT using MFT mirror
— Locate ext2/ext3 Backup SuperBlock
— Undelete files from FAT, NTFS and ext2 filesystem
— Copy files from deleted FAT, NTFS and ext2/ext3 partitions.

3) UndeleteMy Files (Windows)

null

UndeleteMyFiles is a free tool to recover accidentally deleted files from hard disks, USB flash drives, CF and SD cards and other storage media. UndeleteMyFiles is really a very quick and easy way to find and recover deleted mediain just 2 simply steps.

Here are some of the key Features of this tool:

— File Rescue
— Delete File Search
— Files Wiper
— Emergency Disk Image
— Supports hard drives and removable drives
— Includes several handy file utilities

4) FileRecovery Pro (Windows)

null

File Recovery is a safe and affordable do-it-yourself data recovery solution that is designed to recover lost and deleted files from all types of media such as hard drives, optical drives, flash media drives, and multi-media or mobile devices. File Recovery recovers files whether they have been deleted from the command line, from within an application, the file system, or removed from the recycle bin. In addition File Recovery recovers formatted or lost drives, drives with a severe logical file system damage, and can even reconstruct lost RAIDs!

Here are some of the key Features of this tool:

— Easy to use wizard driven interface
— Ability to scan all volumes in a local machine and build a directory tree of lost and deleted files
— Search lost and deleted files matching file name criteria
— Fast scanning engine allows the file list to be built quickly
— Easy to understand File Manager and typical Save File dialog
— Secure data recovery: FILERECOVERY® does not write on the drive it is scanning
— Saving data to any drive is possible, including network drives, removable media, etc.
— PC version supports compressed and encrypted files for Windows® NTFS

5) R-undelete (Windows)

null

Not totally free, but the demo free version runs fine with all features.. R-Undelete is an inexpensive and easy-to-use yet powerful file undelete solution for FAT and NTFS file systems. R-Undelete recovers files on any local disks recognized by the software. An additional file recovery algorithm increases file recovery quality. R-Undelete allows you to evaluate how the software recovers lost files. It is easy-to-use undelete solution for Windows OS users. This utility undelete lost files from FAT (FAT12, FAT16, FAT32), NTFS, NTFS5 (created or updated by Win2000/XP/2003) logical disks.

— Recovers NTFS compressed,encrypted files and alternative data streams
— Recognizes localized names
— Remote data recovery over network
— Recovers files on damaged or deleted partitions
— Damaged RAID reconstruction
— Dynamic disk support
— Standard Windows Explorer – style interface

You can also try, DT Utilities Digital Rescue / Data Recovery Wizard Disk Doctors Windows / Handy Recovery / ParetoLogic Data Recovery Pro / Quick Recovery / GetDataBack / Restorer2000 Professional, but for some handy cost…

So the next time you see your important file getting deleted, don’t panic just use one of the tool above, you are back to normal !!

We can laugh now, but back in 80’s and 90’s then it was all new. Tech that was once cutting-edge is just plain funny now, that’s what this week blog post is all about, I visited computer history sites and watching computer history shows, found this ad’s which made me kind of lol 🙂 on these ads created old times.. so let’s take a look at the old computer ads and revisit the tech of our youth..

1) Radio Shack in 1985 pulled in the big guns when they recruited ubergeek Bill Gates for this advertisement for their Tandy computer. I imagine for Bill and Microsoft this was just an excuse to talk about Microsoft Windows, but still quite a coup for Tandy. Here is the full page advert after the jump..

RadioShack: “Designing a revolutionary concept…” (1985)

RadioShack: “Designing a revolutionary concept…” (1985)

2) Here is the “Introducing Microsoft Excel” ad (1987), I guess this was the very first version of MS excel 😉

Microsoft: “Introducing Microsoft Excel” (1987)

Microsoft: “Introducing Microsoft Excel” (1987)

3) Here’s an old magazine ad by Honeywell for what was a newfangled thing for most people in the 1980s — Electronic Mail or E-mail, that guy is freaking funny 😉

HoneyWell: "What the Heck is Electronic Mail?" (1981)

4) Did you know once upon a time 80 MB of hard disk cost’s for under $12,000, today people ask the question, Why did you ever spend $300 on that tiny 2TB drive??, this ad speaks it all…

System Industries: “80 MB for under $12,000″ (1977)

System Industries: “80 MB for under $12,000″ (1977)

5) An old ad for a 16K RAM card that would have cost you $500 to $800!, this was in 1977, just believe it I remember a famous quote when Bill gates said “Who in the world would need more than 516K of RAM?” 🙂 can’t stop laughing…

Cromemco: “The New 16K RAM card…” (1977)

Cromemco: “The New 16K RAM card…” (1977)

6) Gone are the days of the TMS 9900 (i.e. Before Netbooks and mini PCs, there was the TMS9900, or in other words, Texas Instruments’ 990 minicomputer) – when “two bytes are better than one”, but these retro computer ads will forever live on..

Technico Inc TMS9900: “Two bytes are better than one” (1978)

Technico Inc TMS9900: “Two bytes are better than one” (1978)

7) Epic Lolz, you call that a sexy modem, yeah maybe in 1971, but this is still a epic LOL ..

Penril: “We call it a Penril Modem” (1971)

Penril: “We call it a Penril Modem” (1971)

8) I’ve seen a number of TRS-80 ads featuring him, but this one is epic,, Isaac Asimov’s featuring for this “Favorite First Color Computer” in 1982,,

RadioShack: Issac Asimov featuring a color computer (1982)

RadioShack: Issac Asimov featuring a color computer (1982)

9) The laptop sure has come a long way (chuckling over the Digi-Log Interactive’s 5″ monochrome screen) . One day our kids will be snickering at our iPhones, Blackberries and laptops with curious amusement too…

Digi-Log: “Briefcase Portability” (1976)

Digi-Log: “Briefcase Portability” (1976)

10) And here is one ad with detailed specification “Monitor and Mouse” not included, this is one very old computer with future cost, from late 1980’s the Tandy 5000 MC Professional System !

Tandy 5000 MC Professional System

Tandy 5000 MC Professional System

Also here is an sample of 1950’s Advertising: UNIVAC Computer TV-Commercial (dated: 5 February 1956)

I definitely know in other 20 years our kids are going to be laughing their asses off about the stupid computers we’re using now! What do you think !! Let’s Catch up with an interesting post next week, till then sweet memories…