Security Analyst

Posted:
5/18/2026, 3:24:58 AM

Location(s):
California, United States

Experience Level(s):
Junior ⋅ Mid Level ⋅ Senior

Field(s):
IT & Security

Workplace Type:
Hybrid

At Bolster, you will help protect global brands from phishing, impersonation, and online fraud campaigns targeting their customers and employees. In this role, you will investigate suspicious domains, websites, and malicious infrastructure, validate emerging threats, and support remediation and takedown efforts. You will work closely with cross-functional teams in a fast-paced environment focused on identifying and disrupting cyber threats.

We are seeking a highly motivated and detail-oriented Security Analyst – Threat Hunting / Cybersecurity Analyst to join our growing security team. The ideal candidate has experience in cybersecurity investigations, threat hunting, phishing analysis, and online fraud detection, along with strong analytical and problem-solving skills.

 

Location: We prefer candidates based in our Santa Clara office, but are open to fully remote candidates.

 
 
 
 
Why Bolster?
 
Bolster builds a next-generation AI-powered fraud prevention and brand protection platform designed to detect and eliminate phishing, impersonation, and online scams at internet scale. Our platform protects enterprises from external digital threats across websites, social media, mobile apps, messaging platforms, and the dark web—helping organizations safeguard their brands and customers from rapidly evolving cyberattacks.
 
Bolster is trusted by leading global enterprises and Fortune 500 companies that rely on our technology to detect and automatically take down phishing and impersonation attacks in real time.
 
Our team brings deep cybersecurity expertise with decades of combined experience across leading technology and security organizations. Bolster is backed by leading investors including M12 (Microsoft’s venture fund), Thomvest Ventures, and Crosslink Capital, helping accelerate innovation in AI-driven threat protection.
 
Our AI and machine learning technology uses deep learning, computer vision, natural language processing, and large-scale threat intelligence to detect malicious infrastructure and automate takedowns with high accuracy and speed.
 
We also extend our technology to the broader community through CheckPhish (https://checkphish.ai) — a free phishing and scam detection tool used by millions of security researchers, organizations, and consumers worldwide. The platform helps identify fraudulent websites and contributes valuable threat intelligence to strengthen Bolster’s detection models.
 
Learn more about our culture and values: https://bolster.ai/
 
 
What we offer:
-Excellent medical, dental, and vision insurance
-Flexible time off + paid holidays.
-Equity + 401(k) plan
 
 

Bolster

Website: https://bolster.ai/

Headquarter Location: Santa Clara, California, United States

Employee Count: 51-100

Year Founded: 2019

IPO Status: Private

Last Funding Type: Series A

Industries: Artificial Intelligence (AI) ⋅ Cyber Security ⋅ Machine Learning