Mahatma Gandhi
breach detection system (BDS)
Posted by: Margaret Rouse
Breach
detection systems (BDS) are a category of applications and security devices
designed to detect the activity of malware inside a network after a breach has occurred.
Enterprise
IT uses BDS to protect against the variety of advanced threats, especially
unidentified malware. Unlike tier 1 security, such as a firewall or intrusion prevention,
that scan incoming traffic, BDS focuses on malicious activity within the
network it protects. It determines possible breaches by differing combinations
of heuristics, traffic
analysis, risk assessment, safe marked traffic, data policy understanding and
violation reporting. Using these methods, BDS are able to sometimes find
breaches as they occur and at other times detect breaches and side-channel
attacks that had not previously been found.
BDS has 3
different deployment methods:
- Out-of band systems scan data mirrored from port scans from a switch or network tap.
- In-line systems are deployed between the network and WAN interface just like tier 1 firewalls and intrusion prevention systems.
- Endpoint deployments that use a client installed on endpoint machines.
Advanced
persistent threats (APT) have a number of
exploits they can use on a target, depending on what types of Internet applications
the target uses and likely vulnerabilities. There are
such a variety of threats that it is difficult to impossible for IT to be aware
of every possibility. BDS helps with finding the unknown advanced and adaptive
threats. Even major websites have been hacked; furthermore, the average
successful breach lasts 16 months. On both counts, there is certainly room to
cut down on damages. The use of BDS represent a shift in philosophy from the
idea of preventing every intrusion to realizing that intrusions will happen and
focusing on catching those intrusions sooner.
BDS need
to be configured with details such as operating system, a list of approved
applications, and programs allowed to connect to the Internet. An understanding
of the attack surface
presented by your network is crucial to setting up a successful deployment. To
that end, BDS can assess risky configurations, helping IT limit the attack
surface.
Data
policies can affect what type of BDS is right for an organization. Some BDS in
each type of deployment forward their data back to the BDS service provider to
do post-processing in their own cloud. If it is critical, however, that data
not go offsite, there are also BDS vendors who offer the same level of
processing on premises. BDS are a tier 2 security system, sometimes considered
2nd generation intrusion detection systems (IDS).
www.amazon.com/author/paulbabicki
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National Cyber Awareness System:
10/29/2018 02:21 AM EDT
Original
release date: October 29, 2018
The US-CERT Cyber Security Bulletin provides a summary of new
vulnerabilities that have been recorded by the National
Institute of Standards and Technology (NIST) National
Vulnerability Database (NVD) in the past week. The NVD is sponsored by the Department of Homeland Security (DHS) National Cybersecurity and Communications
Integration Center (NCCIC) / United
States Computer Emergency Readiness Team (US-CERT). For modified or updated
entries, please visit the NVD,
which contains historical vulnerability information.The vulnerabilities are based on the CVE vulnerability naming standard and are organized according to severity, determined by the Common Vulnerability Scoring System (CVSS) standard. The division of high, medium, and low severities correspond to the following scores:
·
High -
Vulnerabilities will be labeled High severity if they have a CVSS base score of
7.0 - 10.0
·
Medium -
Vulnerabilities will be labeled Medium severity if they have a CVSS base score
of 4.0 - 6.9
·
Low -
Vulnerabilities will be labeled Low severity if they have a CVSS base score of
0.0 - 3.9
Entries may include additional information provided by organizations and
efforts sponsored by US-CERT. This information may include identifying
information, values, definitions, and related links. Patch information is
provided when available. Please note that some of the information in the
bulletins is compiled from external, open source reports and is not a direct
result of US-CERT analysis.The NCCIC Weekly Vulnerability Summary Bulletin is created using information from the National Institute of Standards and Technology (NIST) National Vulnerability Database (NVD). In some cases, the vulnerabilities in the Bulletin may not yet have assigned CVSS scores. Please visit NVD for updated vulnerability entries, which include CVSS scores once they are available.
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