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Larry Cashdollar

Principal Security Researcher

Larry Cashdollar has been working in the security field as a vulnerability researcher for more than 20 years and is currently a Principal Security Researcher on the Security Intelligence Response Team at Akamai. He studied computer science at the University of Southern Maine. Larry has documented more than 300 CVEs and has presented his research at BotConf, BSidesBoston, OWASP Rhode Island, and DEF CON. He enjoys the outdoors and rebuilding small engines in his spare time.

Posts by Larry Cashdollar

Analyzing a Go-Based IoT Self-Propagating DDoS Botnet

September 03, 2026Larry Cashdollar

Explore how a self-propagating IoT botnet combines automated scanning, C2 control, and 30 DDoS techniques to expand attack capacity.

Langflow Exploited to Build Custom DDoS Gafgyt Botnets

July 14, 2026Larry Cashdollar

Learn how threat actors exploit Langflow CVE-2025-3248 to hijack high-performance AI infrastructure and deploy customized Gafgyt DDoS botnets.

Decentralized Threat: Stealthy P2P Cryptominer Targeting Ollama Endpoints

May 21, 2026Larry Cashdollar

The Akamai SIRT uncovered a custom P2P Trojan masquerading as system activity. Learn how to detect and mitigate this stealthy Go-based cryptominer.

AI in Vulnerability Discovery: A Call for Human Oversight and Caution

March 13, 2026Kyle Lefton and Larry Cashdollar

Learn why human oversight is crucial to the responsible use of AI systems in identifying security vulnerabilities and how to avoid false positives.

Command Injection in Vivotek Legacy Firmware: What You Need to Know

January 20, 2026Larry Cashdollar

Stay ahead with the latest on the Vivotek upload_map.cgi vulnerability, CVE-2026-22755, and protect your legacy firmware from command injection attacks.

Firmwhere? Rediscovering a Vulnerability in Vivotek Legacy Firmware

November 20, 2025Larry Cashdollar

The Akamai SIRT has uncovered an old flaw in legacy Vivotek firmware that affects a significant number of device models.

Negative Exposure: Edimax Network Cameras Used to Spread Mirai

March 13, 2025Kyle Lefton and Larry Cashdollar

This botnet has also been observed targeting various other vulnerabilities … including a Docker API endpoint exploit.

Active Exploitation: New Aquabot Variant Phones Home

January 28, 2025Kyle Lefton and Larry Cashdollar

The Akamai SIRT has uncovered a new Mirai-based Aquabot variant being spread by exploiting a command injection vulnerability in Mitel SIP models.

DigiEver Fix That IoT Thing!

A vulnerability in DigiEver DS-2105 Pro DVRs is being exploited to spread a Mirai variant that has been modified to use improved encryption algorithms.

When CUPS Runneth Over: The Threat of DDoS

The Akamai Security Intelligence and Response Team tested and confirmed the DDoS threat in the CUPS service to provide guidance and mitigations for defenders.

Beware the Unpatchable: Corona Mirai Botnet Spreads via Zero-Day

The Akamai SIRT discovered a vulnerability in an AVTECH CCTV camera. Read how it is actively being exploited in the wild to spread the Corona Mirai variant.

NetKiller.Condi Botnet Exploits CVE-2024-0778 One Week After Disclosure

March 05, 2024Kyle Lefton and Larry Cashdollar

Akamai SIRT discovered a vulnerability in a Zhejiang Uniview ISC camera. Read how it is actively being exploited in the wild to spread the LZRD Mirai variant.

Actively Exploited Vulnerability in Hitron DVRs: Fixed, Patches Available

As part of the InfectedSlurs discovery, our researchers uncovered vulnerabilities in multiple Hitron DVR device models. Learn about affected devices and firmware.

Actively Exploited Vulnerability in QNAP VioStor NVR: Fixed, Patches Available

December 14, 2023Chad Seaman and Larry Cashdollar

When researching the InfectedSlurs botnet, the SIRT uncovered a vulnerability in QNAP VioStor NVR devices being actively exploited in the wild. Get the details.

Actively Exploited Vulnerability in FXC Routers: Fixed, Patches Available

December 06, 2023Chad Seaman,  Kyle Lefton,  and Larry Cashdollar

Akamai uncovered a zero-day vulnerability in some FXC routers, which allowed the spread of Mirai. Read all about it now that the patch has been released.

Updated Kmsdx Binary Shows KmsdBot Is Targeting the IoT Landscape

August 15, 2023Larry Cashdollar

KmsdBot is back — and, this time, it’s going after IoT devices. Read about the updates to the binary and their effects, which reinforce the need for robust security measures.

Uncovering HinataBot: A Deep Dive into a Go-Based Threat

Akamai researchers uncover and reverse engineer a new Go-based DDoS botnet.

Emulating KmsdBot’s Command and Control and Examining Its Attack Traffic

December 19, 2022Allen West and Larry Cashdollar

Read about the global impact of KmsdBot, a botnet that hit our honeypot earlier this year, and why the evidence is pointing toward it being a DDoS for hire.

KmsdBot: The Attack and Mine Malware

November 10, 2022Larry Cashdollar

Akamai security research has observed a new malware: a cryptominer with dreams of DDoS functionality. Read about kmdsbot in this blog.

The Kit That Wants It All: Scam Mimics PayPal’s Known Security Measures

July 13, 2022Aline Eliovich and Larry Cashdollar

Identity theft affects millions of people every year. See this piece on a scam purporting to be PayPal in an effort to gain total identity theft.

Akamai Blog | Mirai Botnet Abusing Log4j Vulnerability

January 18, 2022Larry Cashdollar

Threat Researcher Larry Cashdollar has discovered evidence of the Mirai botnet abusing Log4j vulnerability and shares code examples.

ThinkPHP Exploit Actively Exploited in the Wild

May 26, 2021Larry Cashdollar

Akamai Blog | Another Golang Crypto Miner On the Loose

March 16, 2021Larry Cashdollar

There are many crypto mining malware variants infecting systems on the internet. On Friday, March 4, 2021, I noticed an interesting hit in my honeypot logs. The binary it captured stood out, as it was rather large at 4MB. I immediately thought it would be a crypto miner written in the Go language. I was correct. This one however, has some newer exploits it's using for proliferation.

Akamai Blog | WordPress Malware Setting Up SEO Shops

November 20, 2020Larry Cashdollar

While recently looking over my honeypots, I discovered an infection where a malicious actor added a storefront on top of my existing WordPress installation. For background, this particular honeypot is a full instance of WordPress running on a Docker image....

Akamai Blog | Stealthworker: Golang-based Brute Force Malware Still an Active Threat

June 03, 2020Larry Cashdollar

By: Larry Cashdollar Malware that can target Windows and Linux systems was recently installed on my honeypot. After some investigation, I determined it to be similar to the malware discovered in February of 2019 by Malwarebytes, and later examined by...

Akamai Blog | XMR Cryptomining Targeting x86/i686 Systems

August 30, 2019Larry Cashdollar

I have been playing close attention to Internet of Things (IoT) malware targeting systems with Telnet enabled, while also collecting samples targeting systems with SSH enabled on port 22. I've collected over 650 samples landing in my honeypot within the...

Akamai Blog | Criminals Using Targeted Remote File Inclusion Attacks in Phishing Campaigns

July 29, 2019Larry Cashdollar

In June 2019, logs on my personal website recorded markers that were clearly Remote File Inclusion (RFI) vulnerability attempts. The investigation into the attempts uncovered a campaign of targeted RFI attacks that currently are being leveraged to deploy phishing kits....

Phishing Attacks Against Facebook / Google via Google Translate

February 05, 2019Larry Cashdollar

When it comes to phishing, criminals put a lot of effort into making their attacks look legitimate, while putting pressure on their victims to take action.