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.

US Turning Up the Heat on North Korea's Cyber Threat Operations
Newest First  |  Oldest First  |  Threaded View
User Rank: Ninja
9/17/2019 | 7:15:41 PM
Re: Utilize the ISP and other vendors to block countries
Well no, not in this case, if we are blocking all traffic (however, hidden or obscure), there will always be a source and destination (we are blocking everything from their country, dns and all). This can be done at the ISP or onsite, 95% of your traffic from the outside world can be blocked. Now if they use a jump host (but the ISP or Akamai would block that as well), we could alleviate this hacking, but it would have to come from a united front (if we are not doing business with them, then why am I allowing them to constantly check my network).

I am not just looking at your site, but layers of protection at the source all the way to the destination. One thing I must say, even when I blocked countries that were considered bad, the hack attempts went down from 2000+ to 5. Not sure about you, but I can deal with that (my UFW/IPTables is blocking all the rest along with SELinux).


User Rank: Guru
9/17/2019 | 10:48:06 AM
Re: Utilize the ISP and other vendors to block countries
Not if they are using tools with Obfuscated Server Lists (OSL's) right? 
User Rank: Ninja
9/16/2019 | 8:51:53 PM
Utilize the ISP and other vendors to block countries
Shouldnt' we block country access where this is part of the sanctions imposed on North Korea. By doing so, we remove access to business in the US, this can be done at the ISP. Akamai has the ability to filter traffic at the source and PaloAlto has the ability to block countries (the entire block). With a little programming, MS Windows can do that as well by using PowerShell or NetSH.
Get-NetFirewallRule | 
Where { ($_.DisplayName -like "$RuleName-#*") -And ($_.Description -like "*Do not edit rule by hand*") } |

# Don't create the firewall rules again if the -DeleteOnly switch was used.
if ($DeleteOnly) { Exit }

$Ranges = Get-Content $File | Where { ($_.Trim().Length -ne 0) -and ($_ -Match '^[0-9a-f]{1,4}[\.\:]') } $RangeCount = $Ranges.Count # Confirm that the InputFile had at least one IP address or IP range to block. if ($RangeCount -eq 0) { "`nThe InputFile contained no IP addresses to block, quitting...`n" Exit } $MaxRangesPerRule = 2000

I know there are ways to address the problem at the source, but it is dependent on the relationships we are trying to maintain.



COVID-19: Latest Security News & Commentary
Dark Reading Staff 4/7/2020
The Coronavirus & Cybersecurity: 3 Areas of Exploitation
Robert R. Ackerman Jr., Founder & Managing Director, Allegis Capital,  4/7/2020
'Unkillable' Android Malware App Continues to Infect Devices Worldwide
Jai Vijayan, Contributing Writer,  4/8/2020
Register for Dark Reading Newsletters
White Papers
Cartoon Contest
Write a Caption, Win a Starbucks Card! Click Here
Latest Comment: This comment is waiting for review by our moderators.
Current Issue
6 Emerging Cyber Threats That Enterprises Face in 2020
This Tech Digest gives an in-depth look at six emerging cyber threats that enterprises could face in 2020. Download your copy today!
Flash Poll
State of Cybersecurity Incident Response
State of Cybersecurity Incident Response
Data breaches and regulations have forced organizations to pay closer attention to the security incident response function. However, security leaders may be overestimating their ability to detect and respond to security incidents. Read this report to find out more.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
PUBLISHED: 2020-04-09
Due to a new NDP proxy feature for EVPN leaf nodes introduced in Junos OS 17.4, crafted NDPv6 packets could transit a Junos device configured as a Broadband Network Gateway (BNG) and reach the EVPN leaf node, causing a stale MAC address entry. This could cause legitimate traffic to be discarded, le...
PUBLISHED: 2020-04-09
KVM in the Linux kernel on Power8 processors has a conflicting use of HSTATE_HOST_R1 to store r1 state in kvmppc_hv_entry plus in kvmppc__tm, leading to a stack corruption. Because of this, an attacker with the ability run code in kernel space of a guest VM can cause the host kernel to...
PUBLISHED: 2020-04-09
In the Linux kernel before 5.6.1, drivers/media/usb/gspca/xirlink_cit.c (aka the Xirlink camera USB driver) mishandles invalid descriptors, aka CID-a246b4d54770.
PUBLISHED: 2020-04-09
An issue was discovered in Avira Free-Antivirus before 15.0.2004.1825. The Self-Protection feature does not prohibit a write operation from an external process. Thus, code injection can be used to turn off this feature. After that, one can construct an event that will modify a file at a specific loc...
PUBLISHED: 2020-04-09
X.509 certificates generated by the MongoDB Enterprise Kubernetes Operator may allow an attacker with access to the Kubernetes cluster improper access to MongoDB instances. Customers who do not use X.509 authentication, and those who do not use the Operator to generate their X.509 certificates are u...