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More than 75,000 unique visitors read papers in the Reading Room every month and it has become the starting point for exploration of topics ranging from SCADA to wireless security, from firewalls to intrusion detection. The SANS Reading Room features over 2,560 original computer security white papers in 99 different categories.
Latest 25 Papers Added to the Reading Room
The GICSP: A Keystone Certification by Derek R. Harp and Bengt Gregory-Brown - August 29, 2016 in Training
The Global Industrial Cyber Security Professional (GICSP) certification was conceived in the winter of 2013 to address a growing challenge spanning multiple industries. Rapid and accelerating changes in technology were increasingly opening process control and automation system networks and equipment to security exposures, and developing a workforce to protect these systems was a growing concern. As a step towards addressing these and other control system security issues, representatives from Shell, Chevron, Saudi Aramco, BP, Rockwell Automation, Yokogawa Industries, Emerson, ABB, Cimation and the SANS Institute came together and laid out the framework of what would become the GICSP.
Android Security: Web Browsers and Email Applications by Marsha Miller - August 29, 2016 in Critical Controls
Mobile devices are popular communication tools that allow people to stay connected in most places at all times. Despite the varied proliferation of applications that can be installed on smartphones and tablets, web browsers and email applications are default applications that remain highly vulnerable if not properly addressed. This paper will compare several different mobile versions of these applications and use the E-mail and Web Browser Protections critical control to suggest ways to secure these end points.
Demystifying Malware Traffic by Sourabh Saxena - August 29, 2016 in Active Defense, Incident Handling, Malicious Code
In today's world, adversaries use established techniques, innovative and intricate methods for cyber-crimes and to infiltrate firms or an individual's system. Usage of Malware is one of those approaches. Malware not only creates an inlet for attacks, but it also turns systems into "zombies" and "bots" forcing them to obey commands and perform activities as per the whims and fancies of the adversary. Thus, attacks like data theft, mail relay, access to confidential/restricted area, Distributed Denial-of-Service (DDoS) can easily be launched against not just the infected system but against other systems and environments as well by utilizing these zombies, bots, and botnets. Attackers not only obfuscate the code but can encrypt payloads as well as malware's traffic simultaneously, using approaches like mutation and polymorphism making their detection difficult not just for antiviruses, but even for firewalls, IDS and IPS, Incident Handlers, and Forensic teams. Organizations, having learned from past mistakes, have also shifted their approach from simple defense mechanisms such as antiviruses, IDS and IPS to aggressive strategies like DNS Sinkhole and Live Traffic Analysis. These strategies not only help in the identification and removal of malware but also in understanding the actual impact, blocking of malicious activities and identification of adversaries.
Hunting with Prevention Analyst Paper
by Dave Shackleford - August 24, 2016
- Associated Webcasts: Using an Attacker Technique-Based Approach for Prevention
- Sponsored By: Endgame
Traditional endpoint protection such as antivirus, while effective in some cases, is no match for the ever-changing techniques that attackers use to get past defenses, according to multiple SANS surveys.
Building a Forensically Capable Network Infrastructure by Nik Alleyne - August 23, 2016 in Security Modeling
The number of computer related security incidents continue to grow yearly, resulting in the need for ensuring network infrastructures are built to be forensically capable. During the period January 2011 to December 2015, the number of reported computer security incidents grew over this four-year period from 1,281 to 3,930. Similar to the increased number of reported computer security incidents, was the increased number of exposed records. During this same period, the number of exposed records jumped from 413 million to 736 million, with 2013 and 2014 having over 2 billion records exposed. Some challenges with becoming forensically capable, relates to understanding the business needs, identifying the people to support that need and ultimately the technology or tools to support business needs.
Automated Analysis of abuse mailbox for employees with the help of Malzoo by Niels Heijmans - August 23, 2016 in Threat Hunting
For most companies, e-mail is still the main form of communication, both internally and with customers. Unfortunately, e-mail is also used heavily by cyber criminals in the form of spam, phishing, spear-phishing, fraud or to deliver malicious software. Employees receive these kinds of messages on a daily basis, even though strict security measures are implemented. Sometimes an employee will fall for the scam but often they will know when it is a false e-mail, especially after good awareness programs. Instead of letting them delete the e-mail, let them share it with you to learn and see what is coming through your security measures or what employees see as "fishy". But what should you do with the e-mails that are forwarded to this special "abuse" mailbox? Malzoo can be used to analyze this mailbox by picking up the e-mails, parsing them and sharing the results with the CERT team. By using the collected data, you can find new spam runs, update spam filters, receive new malware and learn in what parts of the company awareness is highest (and lowest). This paper explains the benefits and drawbacks of letting employees have a central point to report suspicious e-mail and how Malzoo can be used to automate the analysis.
Protect the Network from the Endpoint with the Critical Security Controls by G. W. Ray Davidson, PhD - August 22, 2016 in Network Access Control
- Sponsored By: ForeScout Technologies
The endpoint is rapidly evolving and often the first vector of attack into enterprises, according to the SANS 2016 State of Endpoint Security Survey. As such, all endpoints should be considered potentially hostile.
Simple Approach to Access Control: Port Control and MAC Filtering by Bill Knaffl - August 22, 2016 in Network Access Control, Breaches, Critical Controls
Many times businesses will spend time and money on "Magic Bullet" security and focus on a single technology or threat. This focus can lend itself more towards placing a "check in the box" for compliance rather than on actual security and facing today's threats. Frequently, missing controls can have a cascading effect where because one control was missing or inadequate, other failures occur turning a minor problem into a breach. This paper approaches one such incident, calls out which control was identified as the primary failure and offers an evaluation of a specific tool that could have helped prevent this attack. It covers not only the cost of the tool and the time to implement but discusses other costs such as training, monitoring, maintenance, user impact and offers a guide for a successful implementation.
Incident Handling Preparation: Learning Normal with the Kansa PowerShell Incident Response Framework by Jason Simsay - August 22, 2016 in Incident Handling
Preparation is a critical step in establishing an effective incident response program. Information Security professionals that will be called upon to handle an incident must prepare ahead of time. Kansa is a PowerShell Incident Response Framework developed by Dave Hull. The PowerShell Remoting feature is leveraged to establish a highly scalable and extensible system state collection platform. Once data is collected from across the Microsoft environment, an extensive set of frequency analysis scripts may be executed to enable incident handlers to turn unknowns into knowns and to discover anomalies and indicators of compromise.
In but not Out: Protecting Confidentiality during Penetration Testing Masters
by Andrew Andrasik - August 22, 2016 in Penetration Testing
In but not Out: Protecting Confidentiality during Penetration Testing Abstract:Penetration testing is imperative for organizations committed to security. However, independent penetration testers are rarely greeted with open arms when initiating an assessment. As firms implement the Critical Security Controls or the Risk Management Framework, independent penetration testing will likely become standard practice as opposed to supplemental exercises. Ethical hacking is a common tactic to view a companys network from an attackers perspective, but inviting external personnel into a network may increase risk. Penetration testers strive to gain superuser privileges wherever possible and utilize thousands of open-source tools and scripts, many of which do not originate from validated sources. Penetration testers may gain access to all compartmented sections of a network and document how to repeat successful exploits while saving restricted data to their laptops. This paper illustrates secure Tactics, Techniques, and Procedures (TTPs) to enable ethical hackers to complete their tests within scope while reducing managerial stress regarding confidentiality. A properly conducted independent penetration test should provide essential intelligence about a network without jeopardizing the confidentiality of proprietary data.
Filling the Gaps by Robert Smith - August 18, 2016 in Auditing & Assessment, Risk Management, Standards
There should be an emphasis on the importance of regular internal and external auditing focusing on the business mentality of "It can't happen to me" and mitigating the risk of complacency. The key areas covered will be cementing assessments and audits as a benefit versus a reactive or troublesome activity. The cost savings from regular auditing against the alternatives such as breaches and poor publicity. The world is full of technical and administrative compliance requirements, understanding where gaps are present is not something to be afraid of, but to readily embrace and act upon those deficiencies. Thinking that you are compliant and knowing you are compliant can make a large difference in business longevity and profitability.
The SANS State of Cyber Threat Intelligence Survey: CTI Important and Maturing Analyst Paper
by Dave Shackleford - August 15, 2016 in Best Practices, Threats/Vulnerabilities
- Associated Webcasts: The State of Cyber Threat Intelligence: Part 1: How Cyber Threat Intelligence Is Consumed and Processed The State of Cyber Threat Intelligence: Part 2: The Value of CTI
- Sponsored By: Arbor Networks Hewlett Packard NETSCOUT Systems, Inc. Rapid7 Inc. AlienVault Anomali
Its 2016, and the attacks (and attackers) continue to be more brazen than ever. In this threat landscape, the use of cyber threat intelligence (CTI) is becoming more important to IT security and response teams than ever before. This paper provides survey results along with advice and best practices for getting the most out of CTI.
Generating Hypotheses for Successful Threat Hunting by Robert M. Lee and David Bianco - August 15, 2016 in Threat Hunting, Threats/Vulnerabilities
Threat hunting is a proactive and iterative approach to detecting threats. Although threat hunters should rely heavily on automation and machine assistance, the process itself cannot be fully automated. One of the humans key contributions to a hunt is the formulation of a hypotheses to guide the hunt. This paper explores three types of hypotheses and outlines how and when to formulate each of them.
Investing in Information Security: A Case Study in Community Banking by Wes Earnest - August 12, 2016 in Management & Leadership
Small businesses, such as community banks, often do not have resources dedicated to information technology, much less resources dedicated to information security. Despite larger financial institutions having more resources to invest in information security, they are also attempting to secure much larger, more complex environments. Community banks, with a smaller footprint of computer systems and networks, have the opportunity to produce even greater results with a comparatively smaller investment. This case study shows how one small community bank enjoyed the successes of transitioning from an environment of constant reactionary troubleshooting to implementing an information security strategy that focused not only on improving the information technology environment but also business operations and regulatory compliance for the bank. First Sentence: Small businesses, such as community banks, often do not have resources dedicated to information technology, much less resources dedicated to information security.
Introduction to Rundeck for Secure Script Executions by John Becker - August 11, 2016 in Privilege Management
Many organizations today support physical, virtual, and cloud-based systems across a wide range of operating systems. Providing least privilege access to systems can be a complex mesh of sudoers files, profiles, policies, and firewall rules. While configuration management tools such as Puppet or Chef help ensure consistency, they do not inherently simplify the process for users or administrators. Additionally, current DevOps teams are pushing changes faster than ever. Keeping pace with new services and applications often force sysadmins to use more general access rules and thus expose broader access than necessary. Rundeck is a web-based orchestration platform with powerful ACLs and ssh-based connectivity to a wide range of operating systems and devices. The simple user interface for Rundeck couples with DevOps-friendly REST APIs and YAML or XML configuration files. Using Rundeck for server access improves security while keeping pace with rapidly changing environments.
Changing the Perspective of Information Security in the Cloud: Cloud Access Security Brokers and Cloud Identity and Access Management Masters
by Jennifer Johns - August 4, 2016 in Cloud Computing
Businesses are leveraging cloud computing services at an exponential rate. Working in the information security industry during the cloud computing frenzy is exciting, but it is also proving to be challenging as cloud computing service providers (CSPs) have typically lacked industry standard security controls.
Defending Against the Weaponization of Trust: Defense in Depth Assessment of TLS Masters
by Sandra Dunn - August 1, 2016 in Auditing & Assessment
X.509 certificates are the cornerstone of brokered trust across the digital landscape both inside and outside the firewall. Often they are too trusted and become the weapon of choice for attackers looking for the easiest way to bypass the first layers of controls. Implementing additional layers of certificate quality controls using a Defense in Depth strategy reduces the X.509 certificate attack surface and ensures a reliable trust anchor.
Deception Techniques as Part of Intrusion Detection Strategy Masters
by Colm Kennedy - August 1, 2016 in Intrusion Detection
Intrusion Detection Systems (IDS) are used to help the Security Analyst detect unauthorized or suspicious activity inside a network and on Endpoints (servers, workstations). An early stage in the Hackers methodology uses Active Recon on the network to find other machines they can pivot to and maintain their presence.
Realistic Risk Management Using the CIS 20 Security Controls Masters
by Andrew Baze - August 1, 2016 in Risk Management
Does your organization spend an inordinate amount of time managing risk, when the current state of security is known to be poor, with far too few resources available to deal with the top issues?
Is there a Yelp for Ransomware? Incident response planning that doesnt rely on Plan B by Matt Freeman - August 1, 2016 in Incident Handling
What if there was a service that could classify the impact of each variant of ransomware?
Hardware Keyloggers Masters
by Glen Roberts - July 29, 2016 in Physical Security
Most information security professionals are familiar with keyloggers. However, while the security industry has produced plenty of defenses for software-based keyloggers, hardware keyloggers continue to pose a daunting problem for the typical enterprise. A deeper understanding of these insidious devices can lead to viable techniques for both protection and detection.
Physical Security and Why It Is Important Masters
by David Hutter - July 28, 2016 in Physical Security
Physical security is often a second thought when it comes to information security. Since physical security has technical and administrative elements, it is often overlooked because most organizations focus on "technology-oriented security countermeasures" (Harris, 2013) to prevent hacking attacks.
Implementing the Critical Security Control: Controlled Use of Administrative Privileges by Paul Ackerman - July 25, 2016 in Critical Controls
There is a plethora of information available to help organizations protect their cyber assets.
Polymorphic, multi-lingual websites: A theoretical approach for improved website security Masters
by Jonathan Risto - July 25, 2016 in Web Application Security
Web traffic is one of the largest single types of traffic on the internet.
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