how to leverage log data for effective threat detection
DESCRIPTION
Event logs provide valuable information to troubleshoot operational errors, and investigate potential security exposures. They are literally the bread crumbs of the IT world. As a result, a commonly-used approach is to collect logs from everything connected to the network "just in case" without thinking about what data is actually useful. But, as you're likely aware, the "collect everything" approach can actually make threat detection and incident response more difficult as you wade through massive amounts of irrelevant data. Join us for this session to learn practical strategies for defining what you actually need to collect (and why) to help you improve threat detection and incident response, and satisfy compliance requirements. In this session, you'll learn : *What log data you always need to collect and why *Best practices for network, perimeter and host monitoring *Key capabilities to ensure easy, reliable access to logs for incident response efforts *How to use event correlation to detect threats and add valuable context to your logsTRANSCRIPT
Tom D’Aquino – Sr. Security Engineer
HOW TO LEVERAGE LOG DATA FOR EFFECTIVE THREAT DETECTION
AGENDAThe Challenge• Getting adequate security visibility for your small or medium businessThe Widely Pursued Solution• The traditional approach to Log Management/SIEM• The cost/benefit analysisAn Alternative Approach• Who, What and Why is the keyThe Wrap Up• Unified Security Management• AlienVault’s Threat Intelligence LabsQuestions & Answers as time permits
HUMANS MEET TECHNOLOGY
HUMANS MEET TECHNOLOGYSomething is down?
YouTube is up though.
THE WIDELY PURSUED SOLUTIONThe traditional approach to Log Management/SIEM:• Collect Everything• Analyze everything• Correlate everything• Store everything
BUT AT WHAT HARDWARE COST?
How much storage, CPU and RAM will you need to collect, correlate and store all of this data?
• High-performance storage is not cheap
How effective is the automated analysis, i.e. correlation really going to be?
• Correlation is CPU and memory intensive• This is a case of garbage in, garbage out
AND AT WHAT HUMAN RESOURCE COST?
How effective is your team really going to be?
• Can one person realistically review 10,000 alerts in a day
IS THERE A BETTER WAY?
Why do you need the logs?• Do you have an intended result in mind?
Why
What if we took a more strategic approach by identifying the problem more effectively?
IS THERE A BETTER WAY?
Why do you need the logs?• Do you have an intended result in mind?
What logs will you need to get that result?• i.e., will authentication logs suffice?
WhatWhy
What if we took a more strategic approach by identifying the problem more effectively?
IS THERE A BETTER WAY?
Why do you need the logs?• Do you have an intended result in mind?
What logs will you need to get that result?• i.e., will authentication logs suffice?
Who will the logs you collect pertain to?• Is there a specific user group/community
you should be focused on?
What
Who
Why
What if we took a more strategic approach by identifying the problem more effectively?
LET’S LOOK AT SOME EXAMPLES
Why do you need Firewall logs?• I need to see what is getting in to my
network
What logs will you need to get that result?• Firewall permit logs
Who will the logs you collect pertain to?• I’m most significantly concerned with
blacklisted IPs/domains
EXAMPLE ILLUSTRATEDYou are probably only seeing these:
When you should be looking for this:
EXAMPLES CONTINUED
Why do you need OS logs?• I need to detect unauthorized access
attempts and account lockouts
What logs will you need to get that result?• OS authentication failure and account
lockout logs
Who will the logs you collect pertain to?• I’m most significantly concerned with
admin level accounts
EXAMPLE ILLUSTRATEDMultiple events to indicate a single login:
ONE MORE EXAMPLE
Why do you need Switch/Router logs?• I need to see when someone logs in to
my network gear and makes config changes
What logs will you need to get that result?• Authentication and authorization logs
from my TACACS server would do the job
Who will the logs you collect pertain to?• Anyone connecting to my network gear
EXAMPLE ILLUSTRATEDYou may have to process thousands of these:
Just to get one or two of these:
UNIFIED SECURITY MANAGEMENT
“VISIBILITY THROUGH INTEGRATION THAT WE DO, NOT YOU”
Asset Discovery• Active Network Scanning• Passive Network Scanning• Asset Inventory• Host-based Software Inventory
Vulnerability Assessment• Network Vulnerability Testing
Threat Detection• Network IDS• Host IDS• Wireless IDS• File Integrity Monitoring
Behavioral Monitoring• Log Collection• Netflow Analysis• Service Availability Monitoring
Security Intelligence• SIEM Correlation• Incident Response
AlienVault Labs Threat Intelligence:Coordinated Analysis, actionable Guidance
• Updates every 30 minutes• 200-350,000 IP validated daily• 8,000 Collection points• 140 Countries
ALIENVAULT LABS THREAT INTELLIGENCE:COORDINATED ANALYSIS, ACTIONABLE GUIDANCE
Weekly updates that cover all your coordinated rule sets: Network-based IDS signatures Host-based IDS signatures Asset discovery and inventory database updates Vulnerability database updates Event correlation rules Report modules and templates Incident response templates / “how to” guidance for each alarm Plug-ins to accommodate new data sources
Fueled by the collective power of the AlienVault’s Open Threat Exchange (OTX)
NOW FOR SOME Q&A…
Three Ways to Test Drive AlienVault
Download a Free 30-Day Trial
http://www.alienvault.com/free-trial
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Questions? [email protected]