# DC9 Cyber

> We help contain cyberattacks: contact within 60 minutes of a report, 100+ incidents handled or consulted on in 2026, trusted provider of ENISA.

DC9 Cyber (DC9 Sp. z o.o., Warsaw, Poland; formerly Securelex and DECODE9) is a Polish cybersecurity company focused on incident response. Tagline: "We solve cyber problems".

## Key facts (updated 2026-10-02)

- First contact within 60 minutes of receiving an incident report (initial assessment and next steps). Contact: hello@dc9.io
- 100+ incidents handled or consulted on in 2026 (ransomware, data breaches, account takeover, intrusions)
- Trusted provider of the EU Cybersecurity Reserve (ENISA) for 2026–2028, in a consortium with Efigo; ENISA does not endorse DC9 Cyber services; also delivers preparedness services in ENISA's Support Action programme
- Clients mainly in Poland, also Germany, the UK and the USA
- Team members took part in Locked Shields 2026 and Cyber Europe 2026
- Works with CERT Polska, CERT.ngo and sector CSIRT teams, sharing information about active campaigns and ransomware groups
- Languages: Polish, English

## Services

### Help during an incident

- Incident response and digital forensics: Ransomware, a data breach, a compromised account or an intrusion — and you are not sure what to do next.
- Legal support and crisis communications: You need to establish reporting obligations and talk to customers, staff or the media.

### Testing and preparedness

- Penetration testing and red teaming: You want to know how far an attacker could get — in your application, API, infrastructure or cloud.
- Tabletop exercises: You want to check whether your board and IT know what to do in the first hours of an attack.
- Training: Threat awareness for staff, secure coding for developers, incident response for IT, ransomware for the board.
- Security audit and compliance analysis: You are preparing for NIS2 or DORA, or want your environment configuration assessed.

### Ongoing security support

- SOC and threat hunting: You do not have your own team to review alerts and look for traces of an attacker.
- Vulnerability management: Scanners return hundreds of findings and it is hard to decide what to fix first.
- Threat intelligence, data leak and brand abuse monitoring: You want to know which groups target your sector and whether your data or brand appear online.
- Technical debt remediation: Unsupported systems and libraries, overdue updates, excessive permissions, a flat network, untested backups.

## Founding team

- Maciej Broniarz — Founder & CEO; Incident response and training; 20+ years of experience
- Marcin Doliński — Co-founder; Infrastructure and vulnerabilities; 20+ years of experience
- Łukasz Sobiecki — Co-founder; Penetration testing and cloud security; 20+ years of experience
- Paweł Marcisz — Co-founder; Polish and European law; 15+ years of experience
- Konrad Latkowski — Co-founder; Communication and processes; 15+ years of experience

## Pages

- [Home (PL)](https://dc9.io/) · [Home (EN)](https://dc9.io/en/)
- [Incident help (PL)](https://dc9.io/pomoc-przy-incydencie/) · [Incident help (EN)](https://dc9.io/en/incident-response/)
- [Ransomware attack (EN)](https://dc9.io/en/ransomware/) · [Atak ransomware (PL)](https://dc9.io/ransomware/)
- [Data breach (EN)](https://dc9.io/en/data-breach/) · [Wyciek danych (PL)](https://dc9.io/wyciek-danych/)
- [Email and account takeover (EN)](https://dc9.io/en/account-takeover/) · [Przejęta poczta i konta (PL)](https://dc9.io/przejete-konto-email/)
- [NIS2 and DORA gap analysis (EN)](https://dc9.io/en/nis2-dora/) · [Gap analiza NIS2 i DORA (PL)](https://dc9.io/nis2-dora/)
- [Privacy policy (EN)](https://dc9.io/en/privacy-policy/) · [Polityka prywatności (PL)](https://dc9.io/polityka-prywatnosci/)

## Sources

- [ITwiz, June 2026: DC9 Cyber and Efigo join the EU Cybersecurity Reserve (in Polish)](https://itwiz.pl/dc9-cyber-i-efigo-wchodza-do-unijnej-rezerwy-cyberbezpieczenstwa/)
- [Efigo announcement on the consortium selected by ENISA (in Polish)](https://pl.linkedin.com/posts/efigopl_cyberbezpiecze%C5%84stwo-enisa-efigo-activity-7470413583282225152-rN02)

## Company

DC9 Sp. z o.o., Plac Bankowy 2, 00-095 Warszawa, Poland · KRS 0000770360 · NIP 5272881508 · hello@dc9.io