Showing posts with label IT-Security. Show all posts
Showing posts with label IT-Security. Show all posts

Seven overlooked network security threats for 2011

No one working in network security can complain that the issue has been ignored by the press. Between Stuxnet, WikiLeaks server attacks and counterattacks, and the steady march of security updates from Microsoft and Adobe, the topic is being discussed everywhere. IT workers who have discovered that consolidation, off-shoring, and cloud computing have reduced job opportunities may be tempted to take heart in comments such as Tom Silver’s (Sr. VP for Dice.com) claim that “there is not a single job position within security that is not in demand today.”This and similar pronouncements by others paint a rosy picture of bottomless security staff funding, pleasant games of network attack chess, and a bevy of state-of-the-art security gadgets to address threats. Maybe.
In these challenging times, separating hype from visionary insight may be a tall order. Yet it’s important to strike a sensible balance, because there are problems both with underestimating the problem as well as in overhyping the value of solutions. This situation became readily apparent when making a list of overlooked threats for the upcoming year. The task of sorting through the hype must not become a cause that only managers will be inspired to take up.
Table A summarizes a modest list of security threats that are likely to be overlooked in the coming year. The list thus adds to the mélange of worry-mongering, but at least the scenarios are plainly labeled as worst case scenarios.

1. Insider threat

Millions of dollars can be spent on perimeter defenses, but a single employee or contractor with sufficient motivation can easily defeat those defenses. With sufficient guile, such an employee could cover his tracks for months or years. Firms such as Symantec Vontu have taken a further step and characterized the insider threat issue as “Data Loss Prevention” (DLP). Also in this category are attacks on intellectual property, which tend to be overlooked in favor of more publicized losses.

2. Tool bloat backlash

Recent TSA changes to airport security demonstrate that the public’s appetite for security measures has limits. The same is true for network security. As demands for more and more tools taking an increasingly larger percent of the IT budget mount, backlash is inevitable. Many tools contribute to a flood of false positives and may never resist an actual attack. There is a network security equivalent of being overinsured.
Threat Area Worst Case Scenarios
1. Insider Threat Enterprise data including backups destroyed, valuable secrets lost, and users locked out of systems for days or even weeks.
2. Tool Bloat Backlash Decision-makers become fed up with endless requests for security products and put a freeze on any further security tools.
3. Mobile Device Security A key user’s phone containing a password management application is lost. The application itself is not password-protected.
4. Low Tech Threats A sandbox containing a company’s plan for its next generation of cell phone chips is inadvertently exposed to the public Internet.
5. Risk Management A firm dedicates considerable resources to successfully defend its brochure-like, ecommerce-less web site from attack, but allows malware to creep into the software of its medical device product.
6. SLA Litigation Although the network administrator expressed reservations, a major customer was promised an unattainable service level for streaming content. The customer has defected to the competition and filed a lawsuit.
7. Treacheries of Scale A firm moves from a decentralized server model to a private cloud. When the cloud’s server farm goes offline, all users are affected instead of users in a single region.
Table A. Worst Case Scenarios for Overlooked Network Security Threats

3. Mobile device security

There’s lots of talk about mobile device security, but despite prominent breaches employing wireless vectors, many enterprises haven’t taken necessary precautions.

4. Low-tech threats

Addressing exotic threats is glamorous and challenging. Meeting ordinary, well-understood threats, no matter how widespread, is less interesting and is thus more likely to be overlooked. Sandboxes, “test subnets,” and “test databases” all receive second class attention where security is concerned. Files synchronized to mobile devices, copied to USB sticks, theft of stored credentials, and simple bonehead user behaviors (”Don’t click on that!”) all fit comfortably into this category. Network administrators are unlikely to address low tech threats because more challenging tasks compete for their attention.

5. Risk management

Put backup and disaster recovery in this category, but for many, having servers with only one NIC card or relying upon aging, unmonitored switches and exposed cable routing are equally good use cases. Sadly, most organizations are not prepared to align risks with other business initiatives. To see where your organization stands in this area, consider techniques such as Forrester’s Lean Business Technology maturity for Business Process Management governance matrix.

6. SLA Litigation

Expectations for service levels are on the rise, and competitive pressures will lead some firms to promise service levels that may not be attainable. Meanwhile, expectations for service levels by the public continue to rise.

7. Treacheries of scale

There will be the network management version of the Quantas QF32 near-disaster. Consequences of failure, especially unanticipated failure, increase as network automation is more centralized. Failure points and cascading dependencies are easily overlooked. For instance, do network management tools identify SPOF? A corollary is that economies of scale (read network scalability) lead directly to high efficiency threats - that is, risks of infrequent but much larger scale outages.
What’s a network administrator to do? Address the issues over which some control can be exerted, and be vigilant about the rest. Too much alarm-sounding is likely to weaken credibility.

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As Linux becomes more popular, won't it be more susceptible to virus attacks?

Virus writers write for the popular operating systems. There aren't many viruses written for Linux servers in much the same way there aren't many viruses written for the Mac desktop. If the Linux community gets its way and becomes "the new Microsoft" of the server world, what will prevent the virus writers from just switching exploits and going after the numerous ones I see reported on Linux OS's?
There are several reasons why the prevalence of viruses is much more so on the Windows side than Linux/Unix. Technically speaking, Linux has a much better architecture with respect to structure and permissions. A virus received by a Linux user generally cannot infect system files because of permissions that are in place with Linux systems.
That same virus also doesn't affect programs or files belonging to other users on the box, so it is naturally better retained. Additionally, in order to attack Linux, the writer must be able to attach itself to executables, which run with system privileges. Only a token amount of Linux executables have root type privileges.
I would agree that if Linux did run the world, there certainly would be many more attacks on that operating system than there are today. There might even be a new breed of hackers and virus folk in place, much more intelligent and sophisticated than the current breed. Those who write viruses and worms want to impact as many people as possible, and certainly one of the main reasons there are more viruses on Windows than any other platform is because there are more people using PCs running Windows than any other platform. The bottom line is that these idiots want to hurt as many folks as possible, so they focus on Microsoft.
Though Linux is a better OS than Windows will ever be, as its popularity increases, I don't think anyone would disagree, so will its susceptibility to virus attacks. On the other hand, the Linux/open source community will probably do a better job in proactively fighting the virus fires than Microsoft can ever do.

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Most Popular Viruses

VIRUS NAME
DETAILS
Backdoor.Bot
Backdoor.Bot is a hacker agent, it allows the computer to be remotely controlled by another user. | More details
W32.Netsky.T@mm
Netsky.T worm arrives as an e-mail attachment. The infected attachment name, message body and subject is randomly chosen by the worm. | More details
W32.Stration@mm
Stration aka Warezov is a mass mailing worm, uses e-mail addresses collected from the infected system to distribute infected messages. Stration worm arrives as an e-mail attachment. It has the ability to download new variants of malware from Internet.| More details
W32.Blackmal.E@mm
W32.Blackmal.E@mm aka VB.BI is a mass mailing worm, uses e-mail addresses collected from the infected system to distribute infected messages. It attempts spread through network shares.| More details
W32.Sober.X@mm
Sober.X is a mass mailing worm uses e-mail addresses collected from the system to distribute infected mails. The worm uses its own SMTP engine to spread. The infected mail will be in English or German.| More details
W32.Beagle.AV@mm
Beagle.AV is a mass mailing worm, uses e-mail addresses collected from the infected system to distribute infected messages. Beagle worm arrives as an e-mail attachment. | More details
W32.Sasser.Worm
Sasser is a network Worm,  exploits a remote code execution vulnerability LSASS to infect target systems. It scans for IP addresses and infects unpatched systems. This worm targets Windows 2000, and Windows XP systems. | More details
W32.Netsky.P@mm
Netsky.P is a modified variant of Netsky.C worm. This mass mailing worm spreads using  e-mail addresses collected from MSG, OFT, SHT, DBX, TBB, ADB, DOC, WAB, ASP, UIN, RTF, VBS, HTML, HTM, PL, PHP, TXT, SHTM, DHTM, CGI and EML files to distribute infected messages. Netsky.P worm arrives as an e-mail attachment. | More details
W32.Netsky.D@mm
Netsky.D is a modified variant of Netsky.C worm. This mass mailing worm spreads using  e-mail addresses collected from MSG, OFT, SHT, DBX, TBB, ADB, DOC, WAB, ASP, UIN, RTF, VBS, HTML, HTM, PL, PHP, TXT, SHTM, DHTM, CGI and EML files to distribute infected messages. Netsky.D worm arrives as an e-mail attachment. The infected attachment name, message body and subject is randomly chosen by the worm. | More details
W32.Mydoom.A@mm
Novarg aka Mydoom is a mass mailing worm, uses  e-mail addresses collected from .wab, .adb, .tbb, .dbx, .asp, .php, .sht, .htm, .txt files to distribute infected messages. Novarg worm arrives as an e-mail attachment. The infected attachment name, subject and message body is randomly chosen by the worm. The worm also spreads using KaZaA P2P network. | More details
W32.Blaster.Worm
Blaster worm exploits a vulnerability DCOM RPC [ Buffer Overrun In RPC Interface ] to infect target systems. The worm randomly scans for IP addresses [ X.X.X.0  Example: 202.124.64.0 ] and infects the vulnerable systems. This worm targets Windows NT, 2000, XP, and Windows Server 2003 systems. | More details
W32.Klez.H@mm
Klez.H is a modified variant of original Klez.E worm and it is rapidly spreading in the wild. I-worm/Klez.H arrives as an e-mail attachment with different names. | More details
W32.Yaha.K@mm
Yaha.K is a mass mailing worm uses e-mail addresses stored in Windows Address book and also collects addresses from .ht* files to distribute infected messages. It also spreads through MSN messenger list, ICQ list and Yahoo pager list. | More details
W32.Bugbear@mm
BugBear is an Internet worm, uses e-mail addresses stored in Windows Address book and network shares. It also collects addresses from .dbx, .mbx, .eml, and .ocs files to distribute infected messages. The worm randomly chooses the message body and subject. | More details
Worm/Opaserv.A
Opaserv is a network worm, spreads using shared network drives.  Opaserv infects only the network shares and it will not spread using e-mail attachments. When executed, it will search for Windows folder in the local system and network and copies to "Scrsvr.exe". | More details
W32.Yaha.E@mm
Yaha.E is a mass mailing worm uses e-mail addresses stored in Windows Address book and also collects addresses from .ht* files to distribute infected messages. It also spreads through MSN messenger list, ICQ list and Yahoo pager list. | More details
W32.Klez.E@mm
Klez.E is modified variant of original Klez worm. Klez.E variant rapidly spreads in the wild. I-worm/Klez.E arrives as an e-mail attachment. The attachments are embedded within the e-mail and it won't visible to the user. | More details
W32.BadTrans.B@mm
W32.BadTrans.B@mm is modified variant of original BadTrans worm. This encrypted worm sends infected mails to e-mail address collected from web pages and Windows address book. It also drops Trojan.PSW.Hooker.b in the victims PC. The virus author can steal username and password details using this password stealer. | More details
W32.SirCam@mm
SirCam is a mass mailing worm uses e-mail addresses stored in Windows Address book and also collects addresses from temporary Internet folder to distribute infected messages. SirCam is also network aware worm. It searches for network shares and infects them too. | More details
HomePage
aka
VBSWG.X
VBS/HomePage aka VBS/VBSWG.X is a encrypted VB script worm uses Microsoft outlook to spread. The email message subject will be " Homepage " and the attachment will be "homepage.HTML.vbs" and the message body will be "Hi!
You've got to see this page! It's really cool ;O)"
. | More details
W32.BadTrans@mm
BadTrans is an encrypted worm spreads via MAPI function of Microsoft Outlook and it also drops Trojan.PSW.Hooker.b in the victims PC. The virus author can steal username and password details using the password stealer. | More details
W32/Magistr
W32/Magistr is a complex polymorphic worm spreads via email and it contains virus components to infect PE files [*.EXE, *.SCR] in Windows environment. It infects local machine and PCs connected to the local network (LAN). It is discovered in March 2001 and frequently reported in the wild. | More details
W95/Hybris
Hybris is a complex deadly worm, it will update the plugins from the virus author's site or through a virus conference news group alt.comp.virus. The worm uses Win95/Babylonia virus technique to download plugins, but it uses strong encryption on plugins using RSA 128 bit keys. The worm patches WSOCK32.DLL to email automatically. | More details
W32.Prolin@mm
Prolin is an Internet worm, uses Microsoft Outlook to email itself.The worm is 36,834 bytes long and written in Visual Basic version 6. It needs "MSVBVM60.dll" to spread otherwise it will show DLL missing error. The e-mail attachment name will be "Creative.exe". | More details
W32/MTX
MTX is a complex encrypted worm spreads via email and carries a virus to infect local machine files. It is discovered one month back and frequently reported in the wild. When executed, the worm patches WSOCK32.DLL to email automatically. The virus component uses EPO ( Entry Point Obscuring ) technology to infect files. | More details
Wscript/KAK Worm
Wscript/Kak is a worm that exploits security vulnerabilities in Microsoft Internet Explorer and Microsoft Outlook in a way similar to Bubbleboy worm. It will ONLY infect PCs running Windows 98 with Internet Explorer 5 and Outlook or Outlook Express. | More details
W97M/Marker family
W97M/Marker (also known as HSFX) is a Word macro virus that collects user information from Word and uses FTP to send it over the internet. The virus is similar to W97M/Caligula. It sends the data over to codebreakers.org. It also has some similarities to W97M/Ethan.| More details
PrettyPark.
worm
Pretty Park is an Internet worm, uses mass mailing and mIRC clients to spread. There are lot of unpacked variants also reported in the wild. | More details
W97M/Ethan family
Ethan is a simple macro virus, consisting of a single macro less than 50 lines long. It infects Word's NORMAL.DOT template and documents by inserting it's code to a module in the document.| More details
Worm.Happy99
The is a Win32-based e-mail and newsgroup worm. It displays fireworks when executed first time as Happy99.exe. When executed first time, it creates SKA.EXE and SKA.DLL in the system directory. Also it modifies WSOCK32.DLL to infect.| More details
X97M/Laroux family
XM/Laroux is the first macro virus for Microsoft Excel for Windows which actually works. The virus intercepts Excel's AutoOpen automacro. When an infected spreadsheet is opened, the virus activates and checks whether the system is already infected. If not , the virus creates an Excel for Windows file named PERSONAL.XLS in the Excel for Windows default startup directory (e.g. C:\MSOFFICE\EXCEL \XLSTART) and copies itself there.| More details
W32/Funlove
This is a Win32 PE file virus infects EXE, SCR, OCX files under Win9x and WinNT 4.0 platforms. The infected files will increase by 4099 bytes. What is notable about this virus is that it uses a new strategy to attack the Windows NT file security system and it runs as a service on Windows NT systems. | More details
WYX Boot
WYX boot uses floppy disks to infect other PCs. If you accidentally switch on the PC with an infected disk it will infect Partition table and Boot sector of Hard disk. It spreads on DOS, Windows 9x and Windows NT environments. Some times it failed to replicate in Windows environment and damages the data.| More details
VBS/LoveLetter
VBS/LoveLetter is a VB Script uses Microsoft outlook and Mirc clients to spread. It is spreading faster than Melissa virus. It causes heavy e-mail traffic and downs many mail servers. There are several variants reported in the wild. The attachments will be LOVE-LETTER-FOR-YOU.TXT.VBS, mothersday.vbs, Urgent_virus_warning.vbs, IMPORTANT.TXT.VBS, Virus-Protection-Informations.vbs, ArabAir.TXT.vbs, BEWERBUNG.TXT.vbs, KillEmAll.TXT.vbs, protect.vbs or Very Funny.vbs . | More details
Win95/CIH virus
A more dangerous and deadly virus called "CIH" has spread rapidly and remains dormant in many computers. This virus will wake up or get activated on 26th of April and it will damage the motherboard and the hard disk. The damage caused could be extreme and expensive. | More details
                     The IT industry is attacked everyday by new viruses emerging from all corners of the Globe. However only few viruses are capable of spreading fast and these viruses are called wide spread viruses.

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