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
How Many Layers Does Your Email Security Need?
Newest First  |  Oldest First  |  Threaded View
ChrisHarget
ChrisHarget,
User Rank: Author
6/6/2016 | 3:33:47 PM
Re: Could you send that email again? I never got it.
Lots of useful tactics in your comment.

Blocking all attachments goes too far, for most users we talk to.

Too much of their business (with insiders and outsiders) uses email to send docs. Add in the risk of email account takeover of a trusted business partner, and they really need a way to deeply scan office docs and PDFs for new, one-off, targeted malware. 
theb0x
theb0x,
User Rank: Ninja
6/6/2016 | 1:55:39 PM
Could you send that email again? I never got it.
Here's just a few things your email gateway should include...

 

RBLs

Whitelist

Greylist

Authentication

Challenge / Response

Reject All File Attachments

Strip HTML

Strip URLs

Spoof Filtering

Reverse DNS Mismatch Check

DNSBLs

GeoIP Filtering

Word based filtering

SPF Filtering

DMARC

Heuristic Filtering

Bayesian Filtering

MX Lookup Verification

Mime Header Check

IP Reputation Check

Open Relay Check

Hashing/Checksum

Signature Matching

 
Joe Stanganelli
Joe Stanganelli,
User Rank: Ninja
6/6/2016 | 12:03:45 PM
The spam industry
"According to the 2016 Trustwave Global Security Report (registration required), 54% of inbound email is classified as spam, down from 85% in 2010. Cyber criminals have realized that email gateways are quite capable of blocking generic spam and have moved to different techniques, including targeted attacks."

I wouldn't say that that's the only -- or even the most significant -- cause.  I think it has more to do with how the spamming industry has changed dramatically over the past six years, being whittled to a shadow of its former self by in-fighting and better enforcement.  Brian Krebs has written on this in depth in his book, Spam Nation.


Edge-DRsplash-10-edge-articles
I Smell a RAT! New Cybersecurity Threats for the Crypto Industry
David Trepp, Partner, IT Assurance with accounting and advisory firm BPM LLP,  7/9/2021
News
Attacks on Kaseya Servers Led to Ransomware in Less Than 2 Hours
Robert Lemos, Contributing Writer,  7/7/2021
Commentary
It's in the Game (but It Shouldn't Be)
Tal Memran, Cybersecurity Expert, CYE,  7/9/2021
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
Incorporating a Prevention Mindset into Threat Detection and Response
Threat detection and response systems, by definition, are reactive because they have to wait for damage to be done before finding the attack. With a prevention-mindset, security teams can proactively anticipate the attacker's next move, rather than reacting to specific threats or trying to detect the latest techniques in real-time. The report covers areas enterprises should focus on: What positive response looks like. Improving security hygiene. Combining preventive actions with red team efforts.
Flash Poll
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2022-1809
PUBLISHED: 2022-05-21
Access of Uninitialized Pointer in GitHub repository radareorg/radare2 prior to 5.7.0.
CVE-2022-31267
PUBLISHED: 2022-05-21
Gitblit 1.9.2 allows privilege escalation via the Config User Service: a control character can be placed in a profile data field, such as an emailAddress%3Atext '[email protected]\n\trole = "#admin"' value.
CVE-2022-31268
PUBLISHED: 2022-05-21
A Path Traversal vulnerability in Gitblit 1.9.3 can lead to reading website files via /resources//../ (e.g., followed by a WEB-INF or META-INF pathname).
CVE-2022-31264
PUBLISHED: 2022-05-21
Solana solana_rbpf before 0.2.29 has an addition integer overflow via invalid ELF program headers. elf.rs has a panic via a malformed eBPF program.
CVE-2022-31259
PUBLISHED: 2022-05-21
The route lookup process in beego through 1.12.4 and 2.x through 2.0.2 allows attackers to bypass access control. When a /p1/p2/:name route is configured, attackers can access it by appending .xml in various places (e.g., p1.xml instead of p1).