What happens behind the scenes when a company suffers a cyber attack?

When a cyber attack is confirmed, a company's backstage immediately enters into a rigorous incident response protocol, which requires a coordinated flow where time is the most critical factor of all. Away from the eyes of the public or even employees from other sectors, the security team begins a race against time that begins by isolating the infected systems to contain the spread of the threat, then moves on to an investigation that seeks to understand how and where the attack happened and moves towards reestablishing the operation using backup copies. Every minute it takes to act can result in more significant data leaks and significant financial losses. If your company has already been the victim of an attack or you want to prepare for this possibility, keep reading and find out how to act in the most effective way possible. Warning signs: how to tell that security has been breached? Identifying an intrusion early on requires attention to suspicious behavior on users' devices and in general network traffic, including: Fake antivirus alerts in company browsers Screen locks with messages preventing access to files and demanding financial ransoms Automatic redirection of internet searches to unsolicited pages Frequent appearance of pop-up windows, cursors that move alone or extreme slowness on computers and cell phones Sudden loss of access to corporate accounts or receipt of emails password reset that no one asked for History of emails or messages sent that were not written by the user Unexplained spikes in file transfers Login attempts at times or locations that are incompatible with the company's routine Movements that suggest unauthorized copying of databases Step-by-step incident response An efficient response process to cyber attacks does not leave room for improvisation, and must follow chronological and organized steps to ensure business continuity, protect company assets and preserve information that explain the origin of the threat. 1. Preparation and planning It all starts before any incident, and involves defining the responsibilities of each professional and establishing quick communication channels between the technical team, leadership and legal support. Preparation also requires configuring logs so that the company has the necessary data to be able to analyze what happened if an invasion occurs, in addition to implementing security controls such as multi-factor authentication (MFA). When developing an incident response plan, you should put together a list of essential data, networks, and services that need to receive priority attention. For example, restoration of payment systems must come before other less critical systems and data. 2. Threat isolation When detecting suspicious activity, the first objective is to stop the progress of the attack. Affected devices must be disconnected from the internal network immediately. At the same time, firewalls must be adjusted to block connections to suspicious addresses, and changing passwords and disabling compromised accounts helps contain attackers' access. 3. Investigation and diagnosis With the environment controlled, the technical team begins to track the root of the problem and create a timeline of the event: who identified the failure, which users and systems were impacted and which files were accessed. This is essential to discover whether the attack's gateway was a fake link sent via email, an outdated system, or a leaked credential. QUIZ: Is your team the biggest gateway to cyber attacks? 4. Communication and transparency After containing the incident, the company must notify the competent authorities within the legal deadlines, and if supplier or customer data has been exposed, a formal communication must be sent to those affected, explaining the current scenario and the necessary security guidelines. 5. Restoration The resumption of services must be done gradually and safely. Data is restored solely from backups that were not exposed to attack. To prevent attackers from maintaining any type of residual access, all company login credentials must be reset, and any vulnerabilities that may have caused the incident (such as software that was not updated) must be fixed. 6. Reinforcing security With the situation stabilized, the next step is to transform what happened into practical learning through a detailed assessment of what happened and how it happened. This analysis must generate a clear action plan, with those responsible for correcting discovered vulnerabilities and updating internal security policies, including steps such as: Regularly carrying out security and intrusion tests to discover and close loopholes before cybercriminals take advantage of them Investment in recurring training so that the entire team learns to identify threats such as fake emails Review of access policies, such as authentication rules and control of user permissions Deciphering the alphabet soup of digital attacks To coordinate this step by step in the Behind the scenes, corporate technology has specific terms and acronyms: SOC (Security Operations Center): an operational structure that operates 24 hours a day, 7 days a week, dedicated exclusively to monitoring the company's digital infrastructure, identifying suspicious behavior and coordinating response actions to any threat SIEM (Security Information and Event Management): system that centralizes the collection of records and events from the entire corporate network. It analyzes this data in real time to cross-check suspicious activity that appears isolated and alert