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
Is your organisation ready to defend insider threat?
Newest First  |  Oldest First  |  Threaded View
henryhon
100%
0%
henryhon,
User Rank: Apprentice
8/31/2020 | 7:58:02 AM
Is your organisation ready to defend insider threat?
Insider threat absolutely is not a new topic, many technical / non-technical people talk about it every day, sometimes people will link it up directly with solutions of user security awareness training and Data Loss Prevention (DLP) implementation. That is not incorrect, but is that all?

Recently, in early August 2020, Tesla occurred an insider threat in one of their Gigafactory, a Russian man allegedly offered to pay $1 million to one of the Tesla's employee to deploy malware into the company network to ransom Telsa's data for millions of dollars. This incident has a happy ending that the Tesla employee notified Tesla instead of accepting the bribe or doing nothing.

Let's us try to simulate the scenario that if the ransomware was successfully installed to one of the file server by a privileged system administrator? Would it become a sad ending eventually? The answer is "It depends."

What if there is anti-malware solution deployed on every applicable hosts, the insider may need to disable the anti-malware solution by using privileged access on a particular host to execute the malware in the first place, which triggered an high alert alarm in Security information and event management (SIEM) system. Is there any separate team or Security Operations Centre to monitor the SIEM alerts and investigate what is happening for the disable of the host level security control?

What if the malware is very sophisticated and could not be detected by host based anti-malware solution and attempt to inject malicious macros into every MS documents and excel spreadsheets stored on the file server. Is there any SIEM logic / event correlation could identify such abnormal file access behaviour?

What if the malware attempt to perform https beaconing to a "legitimate" external destination, e.g. AWS ec2 instance or MS Azure virtual machine. Is there any mechanism to flag out such network connectivity pattern?

What if the malware simply perform data exfiltration during network traffic peak hours to hide its track. Is there any mechanism to detect that?

If your organisation could confidently answer the above questions with proven breach attack simulation results, it could imply your organisation is having a good security control to a certain extend.

There is no one-size-fits-all security solution, implement many expensive security tools does not mean it will become more secure. It is always good to have regular red teaming / purple teaming exercises / breach attack simulation (BAS) to test your cybersecurity readiness of your of your current organisation in detect and respond. Be vigilant!


News
FluBot Malware's Rapid Spread May Soon Hit US Phones
Kelly Sheridan, Staff Editor, Dark Reading,  4/28/2021
Slideshows
7 Modern-Day Cybersecurity Realities
Steve Zurier, Contributing Writer,  4/30/2021
Commentary
How to Secure Employees' Home Wi-Fi Networks
Bert Kashyap, CEO and Co-Founder at SecureW2,  4/28/2021
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
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-2021-31755
PUBLISHED: 2021-05-07
An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /goform/setmac allows attackers to execute arbitrary code on the system via a crafted post request.
CVE-2021-31756
PUBLISHED: 2021-05-07
An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /gofrom/setwanType allows attackers to execute arbitrary code on the system via a crafted post request. This occurs when input vector controlled by malicious attack get copie...
CVE-2021-31757
PUBLISHED: 2021-05-07
An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /goform/setVLAN allows attackers to execute arbitrary code on the system via a crafted post request.
CVE-2021-31758
PUBLISHED: 2021-05-07
An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /goform/setportList allows attackers to execute arbitrary code on the system via a crafted post request.
CVE-2021-31458
PUBLISHED: 2021-05-07
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.1.1.37576. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handlin...