Showing posts with label Protection. Show all posts
Showing posts with label Protection. Show all posts

Monday, June 11, 2018

How to defend against homoglyph attack (Recently happened to Whatsapp users)


Chrome:
Install Phish.ai's extension - Helps by showing a big red window every time the user is attempting to access a domain containing Unicode characters

Firefox:
Firefox users, can enable homograph attack detection by enabling "IDN_show_punycode" inside about:config

https://www.tripwire.com/state-of-security/featured/whatsapp-users-targeted-by-homoglyph-attack-peddling-free-tickets-to-theme-park/

Tuesday, May 5, 2015

USB KillSwitch - Interesting idea , maybe useful







From the article:

"USBKill" is a script that turns an innocent-looking thumb drive into a kill switch that, when unplugged, forces computers to shut down.

"USBKill waits for a change on your usb ports, then immediately kills your computer," Hephaestos says in a Github document.



For More details check the link below:

Thursday, May 1, 2014

Defense in depth not good enough - states Bromium

Well, it is sales pitch combined with facts.

Defense in depth not good enough - states Bromium 


I agree on "The security chain is only as strong as its weakest link" statement (I am sure all do)

I disagree on "Adding additional layers to your existing “Layers on Layers” (LOL) of end point protection – just like any Defense in Depth (DID) strategy – is a game of diminishing returns:"

If  you  understand,  what you are trying to protect, your attack surface and choose the right layers of security then DID will be valuable. However I am afraid that the above statement might be true for many organizations.


According to the article:-

In his research, Wojtczuk used the public exploit for the so-called “EPATHOBJ” Windows kernel vulnerability it to bypass application sandboxes, AV, HIPS, rootkit detectors, Microsoft EMET and SMEP – even when all of these solutions are layered one upon the other. Modifications to the exploit allowed us to bypass all of these technologies.

This highlights the fact that “defense in depth” – based on simultaneous deployment of multiple solutions that share the same weakness – does not advance security posture. In this case the entire chain of protective measures shares a common vulnerability – the Windows kernel, which unfortunately is the component with the most rapidly growing set of vulnerabilities – over  80+ CVEs in the last year alone. 

Using hardware isolation – courtesy of the integrated hardware virtualization features on every CPU – to isolate each untrusted task that executes on the end point, solves the problem of the weakest link:  the security posture of the end point is no longer dependent on the Windows Kernel, but on the hardware isolation capabilities of the CPU.


The link below has more information:-

Tuesday, March 25, 2014

Tools / Utilities - AV/Anti-Malware Malwarebytes 2.0 Released (Free/Paid)

 

I have always been a fan of this product. This product was able to find malware that a few expensive commercial versions could not.


Ver 2.0 has a new look and claimed to have better protection.

Still free or pay $19.00 for lifetime license.


NOTE:
The free version does not have real-time protection.



You can download it from the vendor site

https://www.malwarebytes.org/

Tuesday, March 11, 2014

I did not know this - Exchange 2012 DLP function now has "fingerprinting" capability.



I know Microsoft introduced DLP features in Exchange 2013 and now, in SP1 they have introduced "Fingerprinting".

Good job Microsoft.

I believe we will see the DLP feature becoming part of more and more enterprise products.
(Similarly, I am hoping the vendors would also add firewall functions like how Oracle is doing) 


SNIPPETS from the Article:-

The file that you provide is not uploaded or stored by Exchange - only the hash value is kept. Once the document is processed, you can use the new sensitive data type that it represents in DLP rules in exactly the same way as any of the out-of-the-box sensitive data types (like credit card or social security numbers) defined by Microsoft. The hash value that is generated can then be used to compare against documents that flow through the transport system and any rule that uses the sensitive data type associated with the hash value will "fire." 

The links below has more information:

http://windowsitpro.com/blog/exchanges-interesting-document-fingerprinting-feature

Friday, March 7, 2014

Skype Based Malware

That too on a Windows Domain Controller. I am happy that they found the Malware but, what was Skype doing on a Domain Controller



.

May be they missed the #2  (Inventory of Authorized and Unauthorized Software) in the SANS top 2o Critical Security Controls.

SNIPPET:
A creative attacker had used a modified version of the old Skype software development kit (SDK) and turned it into a remote-access Trojan to steal corporate data.



The links below has more details:


https://www.networkworld.com/news/2014/030614-skype-malware-279474.html