Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Risk

12/27/2008
06:08 PM
George V. Hulme
George V. Hulme
Commentary
50%
50%

Every Year Bogus Holiday Cards Flood In-Boxes: This Year is No Exception

If your in-box is like mine, you've been hit with numerous fake greeting card spams. Who knows what you really get if you click on the link: Phishing attack attempt? A keystroke logger? Worse? Keep it safe.

If your in-box is like mine, you've been hit with numerous fake greeting card spams. Who knows what you really get if you click on the link: Phishing attack attempt? A keystroke logger? Worse? Keep it safe.These attacks -- and they are plentiful -- will infect victims through malicious code just by visiting the linked Web site, or the e-card itself may be a Trojan designed to pilfer personal information.

While it's still classified as a low-grade threat, Symantec is warning users of W32.Waledac, which is a worm that spreads across Windows machines by sending links to copies of itself.

Buried in the technical details describing the worm, which spreads as an e-card with a filename of card.exe, Symantec's Liam O'Murchu provides excellent advice to protect systems from these, and many other types of threats:

Use a firewall to block all incoming connections from the Internet to services that should not be publicly available. By default, you should deny all incoming connections and only allow services you explicitly want to offer to the outside world.

Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.

Ensure that programs and users of the computer use the lowest level of privileges necessary to complete a task. When prompted for a root or UAC password, ensure that the program asking for administration-level access is a legitimate application.

Disable AutoPlay to prevent the automatic launching of executable files on network and removable drives, and disconnect the drives when not required. If write access is not required, enable read-only mode if the option is available.

Turn off file sharing if not needed. If file sharing is required, use ACLs and password protection to limit access. Disable anonymous access to shared folders. Grant access only to user accounts with strong passwords to folders that must be shared.

Turn off and remove unnecessary services. By default, many operating systems install auxiliary services that are not critical. These services are avenues of attack. If they are removed, threats have less avenues of attack.

If a threat exploits one or more network services, disable, or block access to, those services until a patch is applied.

Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services.

Configure your email server to block or remove email that contains file attachments that are commonly used to spread threats, such as .vbs, .bat, .exe, .pif and .scr files.

Isolate compromised computers quickly to prevent threats from spreading further. Perform a forensic analysis and restore the computers using trusted media.

Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.

If Bluetooth is not required for mobile devices, it should be turned off. If you require its use, ensure that the device's visibility is set to "Hidden" so that it cannot be scanned by other Bluetooth devices. If device pairing must be used, ensure that all devices are set to "Unauthorized", requiring authorization for each connection request. Do not accept applications that are unsigned or sent from unknown sources.

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
Why Cyber-Risk Is a C-Suite Issue
Marc Wilczek, Digital Strategist & CIO Advisor,  11/12/2019
The Cold Truth about Cyber Insurance
Chris Kennedy, CISO & VP Customer Success, AttackIQ,  11/7/2019
Black Hat Q&A: Hacking a '90s Sports Car
Black Hat Staff, ,  11/7/2019
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Current Issue
7 Threats & Disruptive Forces Changing the Face of Cybersecurity
This Dark Reading Tech Digest gives an in-depth look at the biggest emerging threats and disruptive forces that are changing the face of cybersecurity today.
Flash Poll
Rethinking Enterprise Data Defense
Rethinking Enterprise Data Defense
Frustrated with recurring intrusions and breaches, cybersecurity professionals are questioning some of the industrys conventional wisdom. Heres a look at what theyre thinking about.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2019-5230
PUBLISHED: 2019-11-13
P20 Pro, P20, Mate RS smartphones with versions earlier than Charlotte-AL00A 9.1.0.321(C00E320R1P1T8), versions earlier than Emily-AL00A 9.1.0.321(C00E320R1P1T8), versions earlier than NEO-AL00D NEO-AL00 9.1.0.321(C786E320R1P1T8) have an improper validation vulnerability. The system does not perform...
CVE-2019-5231
PUBLISHED: 2019-11-13
P30 smartphones with versions earlier than ELLE-AL00B 9.1.0.186(C00E180R2P1) have an improper authorization vulnerability. The software incorrectly performs an authorization check when a user attempts to perform certain action. Successful exploit could allow the attacker to update a crafted package.
CVE-2019-5233
PUBLISHED: 2019-11-13
Huawei smartphones with versions earlier than Taurus-AL00B 10.0.0.41(SP2C00E41R3P2) have an improper authentication vulnerability. Successful exploitation may cause the attacker to access specific components.
CVE-2019-5246
PUBLISHED: 2019-11-13
Smartphones with software of ELLE-AL00B 9.1.0.109(C00E106R1P21), 9.1.0.113(C00E110R1P21), 9.1.0.125(C00E120R1P21), 9.1.0.135(C00E130R1P21), 9.1.0.153(C00E150R1P21), 9.1.0.155(C00E150R1P21), 9.1.0.162(C00E160R2P1) have an insufficient verification vulnerability. The system does not verify certain par...
CVE-2010-4177
PUBLISHED: 2019-11-12
mysql-gui-tools (mysql-query-browser and mysql-admin) before 5.0r14+openSUSE-2.3 exposes the password of a user connected to the MySQL server in clear text form via the list of running processes.