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Company details

  1. Computer Security Service
  2. Business and IT Consulting Agency

Written by the company

AVSecAdvisory is a specialized cybersecurity consultancy and training center based in Greece, serving organizations across Southern and Eastern Europe. Founded by Angelos Varthalitis — a seasoned CISO and cybersecurity professional with over 25 years of experience — we help businesses navigate today’s complex regulatory and threat landscape with confidence. Our core services include virtual CISO (vCISO) engagements, NIS2 compliance readiness, ISO 27001 implementation and audit preparation, GDPR advisory, and AI governance consulting. We work with organizations that need enterprise-grade security leadership without the overhead of a full-time hire, building governance foundations from the ground up and translating technical risk into board-level language. As an authorized Mile2 Training Center for Greece, we also deliver internationally accredited cybersecurity certification courses — equipping professionals with the skills and credentials the industry demands. Whether you’re a healthcare provider preparing for NIS2, a SaaS company pursuing ISO 27001, or an enterprise exploring AI governance frameworks like ISO 42001, AVSecAdvisory brings hands-on practitioner expertise paired with a strategic, business-first approach. We don’t sell fear — we build resilience. Get in touch to discuss how we can strengthen your security posture and simplify your compliance journey.


Contact info

4.3

Excellent

TrustScore 4.5 out of 5

9 reviews

5-star
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Rated 5 out of 5 stars

Keep up the great work!

Mr. Varthalitis exhibits a high degree of professionalism, with a strong focus on information security governance, risk management, and regulatory compliance. Demonstrates clear communication, sound judgment, and a consistent commitment to safeguarding organizational integrity through structured and accountable practices.

April 10, 2026
Unprompted review
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Reply from Avsecadvisory

Here’s a reply for Stavros’s review:

Thank you, Stavros — I truly appreciate the thoughtful words. Governance, risk management, and compliance are the pillars of everything we do at AVSecAdvisory, so it means a great deal to hear that reflected in your experience. Looking forward to continued collaboration!

Rated 5 out of 5 stars

Digital security to the point

I was in need of expert guidance on security practices and data protection matters. Angelos not only guided me through with ease but his experience and analysis skill is second to none. If you value your company's data and take digital security seriously i highly recommended them.

April 1, 2026
Unprompted review
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Reply from Avsecadvisory

Thank you, Vaios! It was a pleasure working with you. Helping businesses take a clear, practical approach to security and data protection is exactly what we’re here for. We appreciate the trust and the kind words — don’t hesitate to reach out anytime you need further guidance

Angelos | AVSec Advisory

Rated 5 out of 5 stars

Reliable, straightforward cybersecurity support

I collaborated with Avsec and specifically with Angelos in a new security framework in our company.

As a non-tech person myself but heavily involved in compliance, I find great value in people that can combine business and tech knowledge. Angelos is a person who can manage both sides and “speak both languages”. We were able to not only introduce this framework to the organization, but with clear guidance we managed to implement it too with great success.

Angelos was able to explain the process and the urgency of this project to stakeholders that are not related to security or tech which is a skill very hard to find in people with such a strong background in tech and security.

Finally, he is a very professional, responsive and explained things in a way that actually made sense without unnecessary jargon.

Felt like they genuinely cared about finding the right solution for us, not just ticking boxes. Would definitely recommend.

April 2, 2026
Unprompted review
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Reply from Avsecadvisory

Thank you so much, Alice — this review genuinely means a lot! 🙏

Working with compliance professionals like yourself is always rewarding, precisely because the challenge goes beyond the technical — it's about making security meaningful to the entire organization, from the board room to day-to-day operations. Knowing that the framework not only got introduced but actually implemented successfully is the best possible outcome.

You've put your finger on something I care deeply about: cybersecurity only works when it's understood, not just enforced. Bridging that gap between technical reality and business language is something I strive for in every engagement.

Thank you for trusting AVSecAdvisory with such an important project. It was a pleasure working with you and your team!

Warm regards,
Angelos | AVSecAdvisory

Rated 5 out of 5 stars

A very insightful

A very insightful, valuable and practical source for various cybersecurity topics!

April 10, 2026
Unprompted review
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Reply from Avsecadvisory

Thank you, Lior, really glad the content and insights were valuable to you! 🙏

Making cybersecurity practical and accessible — not just theoretically sound — is something I care deeply about, so your feedback hits the mark perfectly.

Hope to continue being a useful resource for you. Don’t hesitate to reach out if there’s a specific topic you’d like to explore!

Warm regards,
Angelos | AVSecAdvisory

Rated 5 out of 5 stars

I had a great experience working with…

I had a great experience working with AVSec. Angelos is highly professional, knowledgeable, and genuinely focused on delivering practical cybersecurity solutions rather than overcomplicating things.

He took the time to understand our specific needs and provided clear, actionable recommendations that were easy to implement. Communication was smooth throughout the process, and he was always responsive and transparent.

What I appreciated most was his ability to combine strong technical expertise with a business-oriented approach. It never felt like a one-size-fits-all service, but rather a tailored partnership.
I would definitely recommend AVSec to any company looking to strengthen its cybersecurity in a reliable and efficient way.

April 10, 2026
Unprompted review
Avsecadvisory logo

Reply from Avsecadvisory

Thank you very much Katia!
It's always rewarding to hear that the work felt tailored and partnership-driven rather than transactional. That's exactly the approach I strive for understanding the business context first, then building cybersecurity around it in a way that's practical and sustainable.
I really enjoyed working with you and your team, and I look forward to supporting you as your needs evolve. Reviews like this mean a great deal to a boutique consultancy like AVSecAdvisory.

Rated 5 out of 5 stars

Tailored programs, they know what they are talking about

Im a program manager in cybersecurity and I have worked closely with Avsecurity and specifically with Aggelos. We had a great collaboration designing trainings for projects but also I had the luck to learn a lot from their existing trainings. Aggelos put a lot of effort to provide the best tailored program for every client.

March 10, 2026
Unprompted review
Avsecadvisory logo

Reply from Avsecadvisory

Thank you so much, Maria , this means a great deal coming from a fellow cybersecurity professional! 🙏
It was a genuine pleasure collaborating on those training programs. Working with someone who deeply understands the practitioner's perspective makes all the difference — it pushes me to go beyond standard curricula and build something that truly resonates with the audience.
Tailored training is at the heart of what AVSecAdvisory stands for, and your feedback is a great reminder of why that approach matters. I hope our paths cross again on future projects!

Warm regards,
Angelos | AVSecAdvisory

Rated 5 out of 5 stars

10/10

Amazing experience with really hard working ppl , redusing my risk to minimal !100 % recommended

April 11, 2026
Unprompted review
Avsecadvisory logo

Reply from Avsecadvisory

Thank you, Angelos — that 5-star review and your kind words are truly appreciated! 🙏
Reducing risk in a meaningful, practical way is exactly what we set out to do with every client — so hearing that it made a real difference for you is the best possible outcome for us.
Thank you for trusting AVSecAdvisory and for taking the time to share your experience. We’re always here if you need us!

Warm regards,
Angelos | AVSecAdvisory

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