Training
Featured CourseView All Courses
Get a Free Hour of SANS Training

Experience SANS training through course previews.

Learn More
Learning Paths
FeaturedView all Focus Areas
Cloud Security Training, Courses, and Resources
Can't find what you are looking for?

Let us help.

Contact us
Community Resources

SANS Community Benefits

Connect, learn, and share with other cybersecurity professionals

AI Risk & Readiness

Explore expert-driven guidance, training, and tools to help defend against AI-powered threats and adopt AI securely.

Join the SANS Community

Become a member for instant access to our free resources.

Sign Up
For Organizations

Public Sector

Mission-focused cybersecurity training for government, defense, and education

Partnerships

Explore industry-specific programming and customized training solutions

Sponsorship Opportunities

Sponsor a SANS event or research paper

Interested in developing a training plan to fit your organization’s needs?

We're here to help.

Contact Us
Talk With an Expert
Talk With an Expert

Stephen Lerner

Customer Success Specialist at Penlink

Connect with Stephen

Stephen Lerner

About Stephen Lerner

Stephen Lerner is a Customer Success Specialist at Penlink, training clients on the use of Penlink's open-source intelligence platform and on the field of OSINT in general. Originally from Montreal but now based out of NYC, he is forever telling New Yorkers that their bagels are not real bagels.

Free Resources

Review relevant educational resources made with contribution from this instructor.

Leveraging Telegram for OSINT Purposes

Summit Presentation
  • 29 Feb 2024
  • Stephen Lerner

Creating Social Network Graphs Using GEPHI

Summit PresentationCyber Defense
  • 25 Feb 2025
  • Stephen Lerner