SEC595: Applied Data Science and AI/Machine Learning for Cybersecurity Professionals


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Many cybersecurity success stories follow a familiar pattern: hard work, a passed exam, and a clear next step forward. But not every journey unfolds that way. Oana-Catalina Mihai's story is about what happens when things do not go to plan, and why that moment can become a turning point rather than an ending. From the outset, Oana was clear that she did not want to write a conventional success story.
"I'm reading previous alumni spotlight stories and they often say things like, 'Passing the exam gave me a huge confidence boost.' People tend to only share success stories that put them in a good light. What I want to talk about instead is my failure story."
Coming into the SANS x ReDI Fast Track Cybersecurity Training, Oana already had a technical background from working as a software developer. As part of the program she first studied SEC275: Foundations -- Computers, Technology and Security, passing with a fantastic 81%.
As a result, the concepts in the SEC401 Security Essentials -- Network, Endpoint, and Cloud were not unfamiliar, but the pace and depth were intense. She committed fully, studying hard over ten demanding weeks. Despite that effort, the exam result did not go the way she hoped.
"I poured everything into this exam and failed. My brain buffer overflowed. I tried to load SEC401 into my head, and during the exam, instead of accessing data, I overwrote whatever self-esteem variable I had left."
The initial impact was heavy. She questioned whether failing meant she simply was not cut out for cybersecurity and seriously considered walking away. But with time and reflection, that interpretation began to shift.
"Failing didn't define me. How I respond to it does."
What followed was a realisation that changed her perspective entirely. She had been treating the journey as a solitary struggle when in reality, cybersecurity careers are built collectively.
"I thought this was a one-woman battle, when in fact it's a team effort. Breaking into a male-dominated field, finding that first job, even surviving in cybersecurity, it's not a solo mission. You need an army."
Without fully recognising it at first, she already had one. She was a student on the SANS x ReDI Fast Track Cybersecurity Training program, surrounded by peers, mentors, and program leaders who understood both the technical and emotional challenges of the field. Opening up about vulnerability did not weaken her position. Instead, it connected her more deeply to the people around her and gave her the strength to keep going. What initially felt like a setback became a deliberate rebuilding phase. New opportunities emerged, including her selection for a full scholarship to represent Denmark at the WiCyS 2026 Conference in Washington, DC, recognising not just technical ability, but resilience and growth.
Looking back, Oana no longer sees the exam result as a loss. She gained knowledge, a strong network, and the confidence to keep going. Her experience shows why programs like this matter: cybersecurity serves everyone, and diversity strengthens how we respond to evolving threats. Failure is not a verdict on potential, but a moment to lean on others, recalibrate, and move forward together.