Résumé

Selon Cybermalveillance.gouv.fr, le cyberharcèlement visant les marques a augmenté de 205% en France en 2025. Il ne s’agit plus d’un risque marginal, mais d’une véritable menace opérationnelle, allant des raids numériques coordonnés aux deepfakes, en passant par le « review bombing » et l’usurpation d’identité de marque. Les entreprises qui surmontent ces crises sans subir de dommages durables partagent trois caractéristiques : elles se sont forgé une solide réputation en ligne avant même que les attaques ne surviennent, elles disposent d’un protocole d’intervention pouvant être activé dans les 24 heures, et elles considèrent chaque incident comme une opportunité de renforcer la confiance plutôt que comme une humiliation à étouffer.

Le cyberharcèlement de marque a changé de visage : cartographie des nouvelles formes d'attaque

Assimiler le cyberharcèlement de marque à quelques avis négatifs sur Google revient à sous-estimer considérablement la réalité en 2026. Dans le monde professionnel, des campagnes coordonnées d’intimidation, d’insultes ou d’avis négatifs frauduleux peuvent gravement nuire à la réputation d’organisations souvent mal armées pour y faire face, qu’il s’agisse d’artisans ou d’associations à but non lucratif. Pourtant, les méthodes d’attaque se sont considérablement industrialisées et diversifiées, au point que les analystes de Cybermalveillance.gouv.fr qualifient ces campagnes coordonnées de “ terrorisme numérique qui mobilise toute une gamme de cybermenaces différentes pour nuire à l’organisation ”.”

Raids numériques et « review bombing » : la foule comme arme

Un “ raid numérique ” (ou « review bombing ») consiste à mobiliser une communauté (souvent autour d’un élément déclencheur émotionnel) pour inonder les plateformes d’avis d’une entreprise de notes négatives en masse et dans un délai très court. Être victime d’un « review bombing » a des conséquences immédiates sur l’image de marque, mais l’impact peut aller bien au-delà d’une baisse temporaire de la note en ligne. Si elle n’est pas gérée rapidement, une telle crise sape la confiance des clients existants et entrave considérablement l’acquisition de nouveaux prospects. Le cas de la boulangerie de l’Oise en 2025 illustre parfaitement la disproportion entre le déclencheur et la conséquence : une créatrice de contenu sur TikTok a accusé avec virulence la boulangerie, devant la caméra, d’avoir mal préparé sa commande, déclenchant ainsi un torrent d’avis dévastateurs. Ce type d’attaque tire sa force de la viralité émotionnelle des plateformes sociales : l’algorithme amplifie les contenus controversés, et la marque se retrouve à lutter non seulement contre les harceleurs, mais aussi contre les mécanismes intrinsèques des réseaux sociaux.

Usurpation d'identité de marque et « deepfakes » : quand le faux devient impossible à distinguer du vrai

L'usurpation d'identité représente une menace d'un ordre supérieur, car elle transforme la marque elle-même en vecteur d'attaque. 52% des marques ont déclaré avoir subi une cyberattaque liée aux réseaux sociaux en 2024, et le coût moyen de la remise en état après une prise de contrôle de compte dépasse $4,6 millions par incident. En octobre 2025, les comptes Instagram et Facebook officiels de Disney ont été piratés par un groupe inconnu qui a utilisé les pages certifiées de la marque pour promouvoir une fausse cryptomonnaie, exploitant directement la confiance de millions d’abonnés. Les deepfakes ont permis aux cybercriminels de reproduire le ton, le style rédactionnel et la structure des messages d’une marque, rendant ainsi les communications frauduleuses pratiquement impossibles à distinguer des communications légitimes.

Coordinated Smear Campaigns: Disinformation in the Service of Unfair Competition

Between spontaneous raids and technical impersonation lies a colder and more enduring form of attack: the organised smear campaign. It involves fake profiles, methodically published defamatory content, and sometimes complicity within closed forums or groups. Brand monitoring makes it possible to map the actors involved, analyse distribution dynamics, and anticipate the next stages of the crisis. Combined with moderation, it becomes a strategic tool for protecting online reputation.

Building a Reputational Shield Before a Crisis: The Preventive Strategy Brands Overlook

The vast majority of companies that fall victim to cyberbullying share one common trait: they did not anticipate it. Their digital presence was either non-existent or unconsolidated, leaving a void that attackers were quick to fill. Digital voids invite third-party content. Prevention is therefore not a defensive option: it is the first line of attack.

Occupying the Digital Space to Make It Impregnable

A brand whose top Google search results are solid, diverse, and positive holds a considerable structural advantage in the face of an attack. The principle is that of “buffer content”: authentic reviews, in-depth articles, press mentions, and proprietary content form a natural barrier that pushes harmful content towards the following pages of the SERP. In remediation mode, specialist agencies intervene on SERP reconquest, positive content pushing, and defensive netlinking to suppress negative results. But building this asset proactively costs ten times less than rebuilding it after a crisis.

The strategy involves, concretely:

• Claiming all profiles on key platforms (Google Business Profile, Trustpilot, LinkedIn, sector directories)
• Regular, SEO-optimised editorial production
• Systematic activation of satisfied customers to generate authentic reviews

Implementing a Real-Time Strategic Monitoring System

Early detection is the factor that makes the difference between an incident contained within 48 hours and a viral crisis lasting weeks. Monitoring enables weak signals to be detected before they go viral. An effective monitoring system for a brand comprises several layers: tracking brand mentions on social media (Mention, Brand24, Hootsuite Insights), monitoring reviews across all relevant platforms, Google Alerts on the brand name and its executives, and detection of similar domain names that could be used for phishing or impersonation. AI-driven brand radar tools now make it possible to monitor mentions and sentiment across LLMs, social networks, and search engines to detect synthetic threats at an early stage. For mid-sized brands, investment in these tools has become as fundamental as public liability insurance – and often less costly.

Training Teams to Recognise and Document Attacks

Human reactions during an attack are often the weakest link in the defensive chain. Social media and customer service teams are on the front line, receiving hostile messages first and may respond emotionally, inadvertently amplifying the crisis. Brands must now establish clear protocols for investigating and responding to digital impersonation and synthetic harassment, and train HR, legal, and IT teams to recognise and respond to deepfake incidents. Meticulous documentation of each attack – timestamped screenshots, URLs, profiles involved – also forms the indispensable foundation for any subsequent legal recourse. This digital evidence approach follows precise rules: screenshots must include the date, time, and full URL, and be saved to a secure external medium.

Responding to an Ongoing Attack: The Crisis Protocol That Protects Without Escalating

Once an attack is underway, every minute counts and every public reaction can either extinguish the fire or fuel it. Crisis management in the context of cyberbullying follows a counter-intuitive logic: controlled transparency protects better than silence, and a calibrated response neutralises better than a counter-attack.

The First 24 Hours: Triage, Documentation, and Crisis Cell Activation

The first mistake brands under attack make is responding individually to every negative comment, which signals high activity to the algorithms and amplifies the visibility of hostile content. The brand may choose to respond to reviews by explaining that it is currently the target of a smear campaign and invite customers to verify that the reviews are false, potentially turning the situation into a positive communication opportunity. The first-24-hour protocol must be pre-established and activable without deliberation: identify the nature and origin of the attack (spontaneous raid, coordinated campaign, malicious competitor), map the affected platforms, document evidence, activate official reports, and prepare a single, centralised communication. PHAROS is used to report unlawful public content to the relevant specialist services, while a formal complaint initiates an investigation into the perpetrator when the company is a victim. The two steps are complementary and not mutually exclusive.

Legal and Platform Recourse: Report, Remove, Prosecute

The French legal framework offers real recourse, provided the steps are taken in the right order. Police officers and gendarmes assigned to the PHAROS platform verify that reported content and behaviour constitute a breach of French law. Their mission is to process reports and alert the relevant services, including the National Police, the Gendarmerie Nationale, and the DGCCRF. An investigation is then opened under the authority of the Public Prosecutor. In parallel, each major platform has reporting procedures for abusive content or fake reviews: Google Business Profile allows users to contest reviews violating its policies, Meta has a reporting form for impersonating accounts, and Trustpilot offers a specific procedure for fraudulent reviews. The European Digital Services Act (DSA) has established trusted flaggers recognised by authorities, who have privileged access for faster removal of unlawful content. On the civil side, defamation and commercial denigration are prosecutable offences, provided evidence is robustly compiled – hence the importance of systematic documentation from the very start of the attack.

Turning a Crisis into Trust Capital: Post-Crisis Communication

The most strategically under-exploited phase is the one that follows the crisis. Brands that merely “survive” miss a consolidation opportunity. A well-managed post-crisis communication strategy, transparently describing how the brand identified the attack, how it responded, and what measures it has taken to protect its customers, generates greater trust capital than existed before the crisis. Employee ambassador strategies and partnerships with micro-influencers can amplify authentic voices, making it harder for fraudsters to mislead. This approach turns the community into an active brand defender, an asset that cannot be bought and that makes future attacks structurally less effective. Brands that communicate openly about incidents they have experienced paradoxically reinforce their credibility: they demonstrate a digital maturity that their silent competitors cannot claim.

Brand cyberbullying is no longer a residual risk that can be ignored in the hope of never falling victim to it. Faced with a threat growing at 205% year-on-year and playing out over hours rather than weeks, the question for brands is no longer whether they will one day be targeted, but whether they will be ready when it happens. This is precisely the positioning of Netino, France’s first Marketing Process Outsourcer and a PHAROS partner (among others), whose operational model addresses each of these requirements point by point. Where a fragmented approach simply juxtaposes a monitoring tool, a community management agency, and a moderation provider that never communicate with one another, Netino integrates the entire brand protection chain under a single governance framework: social listening and weak-signal detection, 24/7 content moderation across all key platforms, crisis community management, and multilingual social care. Our hybrid technology (combining proprietary AI and expert human supervision) handles the massive volumes generated by a coordinated attack, where pure automation reaches its limits when faced with the contextual, cultural, or legal nuances of contentious content.

Netino guarantees immediate scalability with continuous coverage and redundancy protocols activatable without delay, as well as real-time monitoring with alert escalation and continuous improvement loops. With more than 200 client companies (including L’Oréal, Air France, Société Générale, and Castorama) and over 20 years of experience, Netino does not merely advise: it operates. A distinction that, in today’s digital environment, makes all the difference.

Sources

• Cybermalveillance.gouv.fr, Activity Report 2024, published April 2025
• Francenum.gouv.fr, Businesses facing a sharply accelerating cyber threat in 2025, April 2026
• Journal du Net, Negative reviews, blackmail, digital raids: cyberbullying, the new scourge of SMEs and micro-businesses, January 2026
• Influencer Marketing Hub, Social Media Security in 2026, December 2025
• Cyble, Brand Impersonation 2025: Major Threats And What’s Coming 2026, March 2026
• Littler, Deepfakes and Digital Harassment: What Employers Need to Know in 2025
• Bolster.ai, 12 Brand Protection Strategies for 2026, February 2026
• Ministère de l’Intérieur / Police Nationale, PHAROS: reporting unlawful online content
• Economie.gouv.fr, Combating unlawful content: which official channels to use for reporting?, August 2025