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Blog

Aug 10, 2017 Always Assume You're Compromised and Other Lessons from India's Creditseva Data Breach

This week, a credit service in India called Creditseva suffered a data breach which exposed details of some 48,000 citizens – including driver’s licenses, home addresses and credit reports. The company was notified by Kromtech security researchers of the breach when they noticed the information on an insecure Amazon S3 bucket.

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Jul 31, 2017 What is a multi-cloud environment and how do I secure it?
You may have heard the phrase multi-cloud environment and wondered what it was, do you have it and maybe even thought: whoa, that sounds like a security nightmare.
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Apr 09, 2012

Log Your Accept Traffic

I was watching a video from Cloud Passage earlier today about their new Beta for Windows Firewall management: Halo for Windows.  I don't mean to take anything away from their work and I think it is a good new offering.  But something jumped out at me near the end of the video that the administrator in the video only chose to log drops.  Why just the dropped traffic?

I hear this fairly frequently from people that choose to only log drop traffic, since it represent the bad traffic and they can send these logs to their SIEM to get alerts on these dropped connections.  Particularly when performance of logging is a concern and administrators want to reduce the performance impact by reducing their logging, they will turn logging off on highly utilized rules where they *know* what traffic is flowing through those rules.  But, they continue to log ALL their dropped traffic.  This is completely wrong.

Logging dropped packets does two positive things for you:

    • It allows you to verify your technology is actually working (confirming that the millions of dollars you spent of your firewall is actually doing something)
    • Identify attacks that failed

    I don't dismiss there is some value in #2, to build up a repository of threats.  And, it can aid in discovering malware inside your network and a few other good uses. For this reason, I still strongly encourage logging many drop rules. But remember, this traffic FAILED.  The preventative technology (firewall, IPS, etc) succeeded.  As for the first case, if you don't trust the technology, don't buy it.  And certainly don't use this count like a scoreboard of security success.  The fact that you successfully blocked traffic is not proof of security...no matter how many things you drop.  This is not a security success metric!

    Instead, if you care about security, you should be logging your accepts.  This is the traffic that can represent an actual risk to your organization.  This is the traffic that successfully passes through your security defenses.  There is a ton of value in this data:

      • Forensics review after a breach is discovered to learn when it started and how long it lasted
      • Threat alerts when known bad actors are SUCCEEDING in accessing resources in your organization
      • Anomaly detection when there is an unexpected spike (or drop) in typical traffic behavior

      This attitude to log all dropped traffic has been promoted by just about everyone.  Starting with the firewall and IDS vendors, who want to show value  by logging dropped traffic (look, see, I dropped another attack!).  And it is promoted by standards that say almost nothing about what a firewall policy should or should not do, but will nearly always include a recommendation to include a clean up rule and LOG it.  I don't disagree with logging cleanup rules.  But this is not nearly as important as logging successful access.  In the case of the drop, you already succeeding in thwarting the attack, the log is of little additional value.  In the case of an accept, it is worthy of some additional scrutiny.

      My suggestion...log all accepted traffic and reassess which drop rules you want to log.

      [NOTE: in the Halo example above, since it is a host-based firewall, there can be limited value in logging the http accepts to the local web server since the web server should be logging connections as well.  This video just happened to get me thinking about this topic this morning.]

      Events

      Webinars

      Jul 27, 2017 Bridge the Gap Between Your Risk & Network Teams to Reduce Risk
      Recent cyberattacks such as Wannacry and Petya magnify the need to make risk and vulnerability management a top priority for organizations.  Combine that with a network security posture that is too open from years of access changes and little policy cleanup, organizations are more at risk now than at any time in history. 
      View
      Jun 29, 2017 The Hybrid Cloud Reality: Managing Security in Private, Public & On-Premises Environments
      In a recent study, 90% of IT security practitioners reported that their organization has adopted or plans to adopt a cloud solution. Cloud is now.
      View
      Jun 22, 2017 La vida del firewall: administración constante y automatizada del ciclo de vida de las políticas

      El nuevo paradigma de la automatización es la “Administración del Ciclo de Vida”

       

      Te mostraremos cómo FireMon Intelligent Policy Automation utiliza la tecnología de automatización e inteligencia para reducir el esfuerzo e incrementar la eficacia en cada etapa del proceso de cambios.
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      Jun 06, 2017 Top 5 Risks of "Dirty" Firewalls
      Firewall rules are notoriously complex and voluminous in nature. Even small organizations have multiple firewalls and significant complexity. But large organizations are overwhelmed.
      View

      News

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      250K Photos Leaked in Cosmetic Surgery Extortion Attack
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      Jun 01, 2017
      OneLogin Breach Reignites Concerns over Password Managers
      Dark Reading
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      OneLogin Breach Reignites Concerns over Password Managers
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      May 29, 2017
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      IT Pro Portal
      May 26, 2017
      Hackers upgrading malware to 64-bit code to evade detection
      SC Magazine UK
      May 25, 2017
      83 percent of security staff waste time fixing other IT problems
      Betanews
      May 24, 2017
      Unsanctioned Computer Support Costs Companies $88K per Year
      Dark Reading
      May 23, 2017
      WannaCry Successor Is New ‘Doomsday’ SMB Worm That Uses 7 NSA Hacking Tools
      Information Security Buzz
      May 23, 2017
      WannaCry? Not really. A report from the 11th Eskenzi PR IT Analyst and CISO Forum
      Computer Weekly
      May 18, 2017
      Cisco Warns Of Un-Patchable WannaCrypt Vulnerabilities
      Information Security Buzz
      May 16, 2017
      Here comes the cloud...and it's all right
      SC Magazine
      May 15, 2017
      10 ways cyber security will evolve in the face of growing threats
      Information Age
      May 12, 2017
      Managing Complexity Is No. 1 Security Challenge in FireMon’s Annual State of the Firewall Report
      Computing Security
      May 12, 2017
      Sabre Breach
      Information Security Buzz
      May 12, 2017
      FireMon Announces Industry’s First Intelligent Cloud Security Management Solution
      IT Security Guru
      May 12, 2017
      FireMon Releases Third Annual State of the Firewall Report
      Dark Reading
      May 12, 2017
      WikiLeaks drops 'Grasshopper' documents, part four of its CIA Vault 7 files
      Wired
        See all news from 2017



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      Risk Solved: Automated, Real-Time Risk Analysis & Remediation
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      The Top 5 Myths of Data Breaches
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      Firewall technology has come a long way since its initial, most rudimentary forms. Next-Generation Firewalls (NGFW) are the latest development, and organizations are accelerating adoption to the new technology. But NGFWs aren’t a fix-all solution.

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      This national insurance provider had three problems to tackle regarding their firewall policies. First, the number of rules under management was overwhelming staff and processes. They needed to increase visibility and effectiveness of their firewall change request/workflow ticketing process. And they also need help maintaining compliance PCI DSS requirements.
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      Each time this Global MSP engaged a new customer, they had to onboard the firewalls – sometimes hundreds per engagement – into their network. Part of the onboarding process required assessing the policies against internal best practices – a manual, line-by-line process that took an average of 16 hours/firewall and was extremely error-prone.