Criminal Lawyers in Computer Damage Defense

The crime of computer damage regulated in Arts. 264 to 264 quater of the Spanish Criminal Code punishes whoever, without authorisation and seriously, deletes, damages, deteriorates, alters, suppresses or makes inaccessible another's computer data, programs, electronic documents or systems. The protected legal interest is twofold: property over digital assets and the integrity and availability of information systems, which doctrine terms "computer security" as a collective interest. Consolidated Supreme Court case-law defines the offence as a material-result crime requiring a verifiable impact on system functionality or information's economic value. The transposition of Directive 2013/40/EU via LO 1/2015 significantly broadened the catalogue, incorporating system damage and the manufacture or possession of programs designed to commit these offences.

The Spanish Criminal Code distinguishes several modalities within this crime family. Art. 264.1 CP punishes damage to data, programs or electronic documents (deleting databases, altering files, modifying configurations); Art. 264 bis CP punishes damage to system functioning (DDoS attacks, paralysing malware installation, server sabotage); Art. 264 ter CP punishes the manufacture, import, distribution or facilitation of tools designed to commit these offences (ransomware kits, exploits, malicious scripts); and Art. 264 quater CP regulates legal entities' criminal liability, particularly relevant for tech companies and service providers. To this is added liability for ransomware, a growing phenomenon usually concurring with extortion (Art. 243 CP) and, when affecting personal data, with privacy crimes (Art. 197 CP), generating especially serious punitive concurrences.

The penalties are severe and reflect the legislator's importance attributed to digital security. The basic type of Art. 264.1 CP is punished with six months to three years' prison. When aggravating circumstances concur —especially serious damage, impact on a large number of systems, significant economic loss, impact on essential public services or commission within a criminal organisation— the penalty rises to two to five years' prison and fine of the amount to tenfold the loss. If damage affects critical infrastructure (energy, transport, health, financial system, water) the penalty can reach three to eight years' prison. Art. 264 bis CP on system functioning damage maintains a similar range, with specific aggravators when public services are affected. Liable legal entities can be sentenced to fines of double to quadruple the loss, activity suspension, judicial intervention and, in extreme cases, dissolution.

Technical defence in computer damage requires combining criminal law and forensic computer knowledge. The first axis is digital chain of custody audit: verifying that judicial police performed bit-by-bit forensic imaging of the support, calculated hash, documented seizure and preserved evidence per UNE-EN ISO/IEC 27037 standards and case-law on electronic evidence; any breach can generate evidentiary nullity. The second axis is challenging intent: many cases imputed as sabotage are actually technical errors, software bugs, badly configured automatic scripts or misunderstandings about employment permission scope; the computer damage offence does not admit a negligent form, so demonstrating absence of intent excludes criminality. The third axis is implicit or express authorisation: when the defendant acted in their role as administrator, systems technician or developer with permissions granted by the company, there is no unauthorised action. The fourth axis is challenging loss valuation: damage amount determines the penalty and usually includes inflated items (hypothetical lost profits, system reconstruction costs), susceptible to counter-expert reports.

Current forensic practice shows exponential growth in computer damage proceedings. Ransomware attacks against Spanish companies have multiplied and are usually investigated by the National Court when transnational or organised in nature. Disgruntled employee sabotage (deleting CRM, altering customer database, modifying configurations before leaving) is one of the most frequent cases reaching our firm, especially in tech, health and financial sectors. DDoS attacks against e-commerce portals or media are pursued as system functioning damage. In this scenario, having a specialised legal-expert team is decisive: at Alonso Sala we combine 15+ years of experience in criminal defence with the collaboration of forensic computer experts accredited by ANCITE to articulate strategies ranging from evidentiary nullity analysis to settlement negotiation when facts are undisputed. Each computer damage case requires rapid response, immediate preservation of own evidence and rigorous technical analysis to identify prosecution vulnerabilities.