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 John H. Sawyer

Profile of John H. Sawyer

Contributing Writer, Dark Reading
News & Commentary Posts: 272
Articles by John H. Sawyer
posted in April 2010

Sending Email, Web Security To The Cloud

E-mail and Web security outsourcing are gaining more momentum as resource-strapped companies look for ways to tighten their IT belts. IT shops are constantly being asked to do more with less, and it's often security that gets more budget cuts since it's an IT area that doesn't contribute directly to a company making money.

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Trusting 'Trusted' Sites Again

I've been teaching a user security awareness and training course to faculty and staff at our university. One of the great aspects of the class is the discussions that develop out of the participants' questions, like the security of social networks and how to use wireless securely while on the road. Lately, I've been getting one question more and more often: How do I know if a site is safe?

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CSRF Attacks Get New PoC Creation Tool

Cross site request forgery (CSRF) is a powerful attack that can have devastating consequences. It's not a new attack, but new tools are released every year because Web developers don't always write secure code that can prevent these attacks. Often, CSRF vulnerabilities go undetected because automated scanners have difficulty detecting them.

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Log Review Checklist For Responders Under Fire

Checklists are one of the most important things for first responders to have access to when responding to an incident. The reasons are many, and most of them tend to fall back on the human nature of the first responder. Incident response can impose a lot of stress on an individual, whether from management or the sheer criticality of the potentially hacked resource, it can be easy to miss a step or remember a command incorrectly when under fire.

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Attacking Electronic Door Access Control Systems

A friend recently pointed me to some research he has been doing with embedded door access control systems, as well as some of the vulnerabilities he has uncovered. Some of his findings were recently disclosed at Carolinacon, with more to come during his presentation at Hack in the Box.

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Bridging The Gap Between Training And Operations

The EDUCAUSE Security Professionals Conference is a great conference for IT staff from higher education to meet and learn about deploying and managing security tools like OSSEC and Bro IDS, hear how others are dealing with compliance issues, and network with other professionals interested in security.

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Nmap Does Much More Than Network Discovery

Nmap is among a network penetration tester's best friends, sitting high on a pedestal with the Metasploit Framework. I've been using the tool my entire career for network mapping and host discovery, typically on a weekly basis.

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Password Brute Forcing Tool Gets Major Update

Brute-force password guessing attacks are very common. If you operate a publicly accessible SSH server, then you know firsthand just how common it is with constant poking for weak passwords on accounts like root, admin, and test. When the attackers do find a weak password and gain access, they will typically download their tools and start scanning for more weak passwords from the newly compromised server.

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I Smell a RAT! New Cybersecurity Threats for the Crypto Industry
David Trepp, Partner, IT Assurance with accounting and advisory firm BPM LLP,  7/9/2021
Attacks on Kaseya Servers Led to Ransomware in Less Than 2 Hours
Robert Lemos, Contributing Writer,  7/7/2021
It's in the Game (but It Shouldn't Be)
Tal Memran, Cybersecurity Expert, CYE,  7/9/2021
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PUBLISHED: 2021-09-16
There is command injection in the addMeshNode interface of xqnetwork.lua, which leads to command execution under administrator authority on Xiaomi router AX3600 with rom versionrom< 1.1.12
PUBLISHED: 2021-09-16
There is a buffer overflow in librsa.so called by getwifipwdurl interface, resulting in code execution on Xiaomi router AX3600 with ROM version =rom< 1.1.12.
PUBLISHED: 2021-09-16
Multiple Wireless M-Bus devices by Enbra use Hard-coded Credentials in Security mode 5 without an option to change the encryption key. An adversary can learn all information that is available in Enbra EWM.
PUBLISHED: 2021-09-16
Enbra EWM 1.7.29 does not check for or detect replay attacks sent by wireless M-Bus Security mode 5 devices. Instead timestamps of the sensor are replaced by the time of the readout even if the data is a replay of earlier data.
PUBLISHED: 2021-09-16
In Enbra EWM in Version 1.7.29 together with several tested wireless M-Bus Sensors the events backflow and "no flow" are not reconized or misinterpreted. This may lead to wrong values and missing events.