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.

Comments
With $325 Million In Extorted Payments CryptoWall 3 Highlights Ransomware Threat
Newest First  |  Oldest First  |  Threaded View
theb0x
100%
0%
theb0x,
User Rank: Ninja
11/4/2015 | 3:03:56 PM
Re: Back up your data!
There is a more simpler solution to protecting your data other than just backups.

Encrypt your data. CryptoWall can't encrypt files that are already encrypted by the end user.

The data can be decrypted on access which would lock the files currently opened. When the file is closed it is

automatically re-encrypted in realtime. As an extra layer of security it is also possible to encrypt volume shadow

copies of the files as the behavior of CryptoWall will automatically sdelete (Secure Delete) all shadow copy data

on the infected machine. I am no way suggesting not to backup your data. However, a proper retention policy

should also be correctly set to seven or more days. If a backup whether it be to a local, network drive, or cloud

based is not encrypted there remains the risk of the files being encrypted by the ransomware and changes of

modified files by CryptoWall propagating and overwriting the original backup of end user data. Also, CrytoWall

only affects files by extention (ie .docx, .qbw, .xlsx) If a file extention is modified to something completely

obscure in no relation with any application they will remain unaffected by this ransomware. 
SgS125
50%
50%
SgS125,
User Rank: Ninja
11/2/2015 | 10:51:53 AM
accuracy of amount in question?
According to Howard, the researchers were able to track $325 million in ransom payments through the Bitcoin system. "Our estimate is conservatively low. We think it could easily be double that number but did not have the direct evidence to claim it."

 

So really you could say that is was only half as much with just as much confidence?

I often wonder where the numbers for this come from,  a guess may not be very newsworthy.

What evidence is there to prove it one way or another?
RyanSepe
100%
0%
RyanSepe,
User Rank: Ninja
10/31/2015 | 5:00:34 PM
Enterprise Level
How prevalent is Ransomware at the enterprise level with network drives? Are they affected in the same way a regular endpoint will be?
RyanSepe
100%
0%
RyanSepe,
User Rank: Ninja
10/31/2015 | 4:59:14 PM
Back up your data!
Please people, perform due diligence and don't let ransomware cripple us. Back up your data to a another source regularly. Make sure your OS has default backup settings enabled such as Windows "Previous Versions". This could save tons of money and headaches.


Edge-DRsplash-10-edge-articles
7 Old IT Things Every New InfoSec Pro Should Know
Joan Goodchild, Staff Editor,  4/20/2021
News
Cloud-Native Businesses Struggle With Security
Robert Lemos, Contributing Writer,  5/6/2021
Commentary
Defending Against Web Scraping Attacks
Rob Simon, Principal Security Consultant at TrustedSec,  5/7/2021
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
2021 Top Enterprise IT Trends
We've identified the key trends that are poised to impact the IT landscape in 2021. Find out why they're important and how they will affect you today!
Flash Poll
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2021-33033
PUBLISHED: 2021-05-14
The Linux kernel before 5.11.14 has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value.
CVE-2021-33034
PUBLISHED: 2021-05-14
In the Linux kernel before 5.12.4, net/bluetooth/hci_event.c has a use-after-free when destroying an hci_chan, aka CID-5c4c8c954409. This leads to writing an arbitrary value.
CVE-2019-25044
PUBLISHED: 2021-05-14
The block subsystem in the Linux kernel before 5.2 has a use-after-free that can lead to arbitrary code execution in the kernel context and privilege escalation, aka CID-c3e2219216c9. This is related to blk_mq_free_rqs and blk_cleanup_queue.
CVE-2020-24119
PUBLISHED: 2021-05-14
A heap buffer overflow read was discovered in upx 4.0.0, because the check in p_lx_elf.cpp is not perfect.
CVE-2020-27833
PUBLISHED: 2021-05-14
A Zip Slip vulnerability was found in the oc binary in openshift-clients where an arbitrary file write is achieved by using a specially crafted raw container image (.tar file) which contains symbolic links. The vulnerability is limited to the command `oc image extract`. If a symbolic link is first c...