
Stalwart of the Romanian law market Musat & Asociatii is trusted counsel to a range of major companies and individuals for white-collar crime matters, excelling in investigations work. Stefan Diaconescu is the standout contact, praised by clients for his ‘perfect blend of legal expertise and knowledge’, he was raised to the partnership in 2024. He has a strong track record before criminal investigation authorities and all levels of national court.
Testimonials
Collated independently by Legal 500 research team.
‘I have collaborated with this practice for 8 years and they continue to keep the same high level of professionalism in terms of understanding the most important facts of a case, concluding at the highest level of knowledge and expertise, being always present in court and, the last but not least, being extremely empathic with their clients.’
‘We don't think there is a better criminal law team out there than Musat & Asociatii and Stefan Diaconescu is the true star of their white-collar team. Stefan handled our internal investigation, negotiations with the other defendants in the file and also obtained the best result in the criminal file, recuperating the entire prejudice caused to our firm by our former employees.’
‘Stefan Diaconescu has the perfect blend of legal expertise and knowledge and has achieved remarkable results for us over the past years. He has offered sound legal advice and has been keen to offer the best legal solution, within appropriate billing times. We have said this year in year out that everyone should remember the name Stefan Diaconescu.’
‘The white-collar criminal team of Musat & Asociatii is exceptional being headed by Stefan Diaconescu, boasting both significant experience, but also sound legal knowledge. We have received the best legal advice and representation both in the court room, but also in front of the criminal investigation authorities.’
‘We have had the pleasure of working with Stefan Diaconescu for over 9 years until now and he has always delivered the best legal advice. His promotion to partner is a statement of his commitment to the legal profession, his sound advocacy skills and his implication in all white-collar criminal matters. His legal knowledge is stellar and it just proves his implication in numerous other projects, conferences and workshops, which we regularly attend.’
‘To sum up all the quality of the criminal team of Musat & Asociatii would take a while as they are truly market leaders in this field, having over 10 attorneys specialised in white-collar crime. The leader that really strikes out from this firm is Stefan Diaconescu, as he has the knowledge, the people-skills and the go-to attitude to get everything done. We really appreciate everything that Diaconescu has done for our firm for the past 4 years. As long as Musat & Asociatii has Stefan on their roster, we will trust them with all our legal work.’
‘Stefan Diaconescu is the best criminal law attorney that we have worked with from all the law firms we have engaged over the years. He was the lead counsel in front of the prosecutor, but also the court of law, offering the best legal advice while also delivering results in all our criminal law matters. His team is always on call and has performed exceptionally over the past years, offering trust, sound legal solutions but also client-oriented approach.’
Key clients
- KMG International NV
- Leoni AG
- Costel Alexe
- Irinel Popescu
- Cornel Sintimbrean
- Banca Transilvania
- EightCap EU Ltd.
- Medwein SRL
- Gate Gourmet Switzerland GmbH
Work highlights
- Representing KMG International NV and its affiliated companies in EUR 1.6bn civil liabilities and commercial claims following an investigation by the Romanian authorities regarding the conditions for the privatisations procedures of one of the companies owned by KMG Group International NV.
- Representing Leoni Group in various court cases related to the investigation of a transnational informatics fraud, which led to a series of fraudulent transfers in the amount of EUR 40m.
- Assisting Costel Alexe, the president of the Iași County Council and former Minister of Environment, in a criminal investigation regarding allegations of corruption crimes, embezzlement and forgery of documents, in front of the High Court of Cassation and Justice.
Lawyers

Practice head
The lawyer(s) leading their teams.
Gheorghe Musat, Alexandru Terta, Stefan Diaconescu