Cybersecurity 
The NIS2 Directive is the European Union’s updated cybersecurity framework, designed to improve cyber resilience across critical sectors. Building on its predecessor, the Network and Information
7 min read
Published on June 17, 2026
Information Technology (IT) security is the practice of protecting an organization’s systems, data and networks from unauthorized access and cyber threats. It encompasses a wide range of processes, policies and technologies designed to secure everything from employee devices to cloud infrastructure. As companies become more dependent on digital systems, a strong IT security strategy is essential to protect sensitive business data, maintain customer trust and ensure compliance with regulatory standards.
Continue reading to learn more about IT security and how companies can implement it.
Key takeaways
- IT security protects an organization’s systems, networks and data from unauthorized access and cyber threats.
- While IT security, information security and cybersecurity are often used interchangeably, information security is the broadest discipline, with IT security and cybersecurity serving as specialized subsets.
- The most common IT security threats are malware, ransomware, phishing and insider threats, which can all have severe financial and operational consequences.
- Strong identity controls like zero-trust security, RBAC and PAM are among the most effective defenses organizations can implement.
- AI is enabling cybercriminals to automate attacks, generate convincing phishing content and scale operations that previously required significant resources and expertise, making proactive security controls more important than ever.
IT security vs information security vs cybersecurity
Although IT security, information security and cybersecurity may be used interchangeably, each term has a distinct meaning. Here are the main differences:
| IT security | Information security | Cybersecurity | |
|---|---|---|---|
| Definition | The protection of digital systems, infrastructure and networks from threats | The protection of all types of information from unauthorized access or data loss | The protection of internet-connected systems and data from online threats |
| Scope | Part of information security focused on technology systems | Covers all information (broadest scope) | A subset of information security focused on protecting systems and data connected to the internet |
| What it protects | Devices, servers, software, networks and stored data | Data, physical documents and intellectual property | Cloud environments, applications, data and networks |
| Threats addressed | Cyber attacks, system failures and unauthorized access | Data breaches, theft, insider threats and human error | Malware, phishing and ransomware attacks |
Simply put, information security is the umbrella under which IT security and cybersecurity fall, with each focused on a more specific area. In practice, information security may look like a company’s security policy covering files stored on its servers and in filing cabinets; IT security may look like an IT team enforcing Multi-Factor Authentication (MFA) across employee devices; and cybersecurity involves blocking malicious traffic from reaching a company’s applications.
The three protection goals of IT security
At the center of any IT security strategy are three core objectives, known as the CIA triad: Confidentiality, Integrity and Availability. These principles form the foundation of every IT security policy and control an organization implements.
- Confidentiality: Ensures that sensitive information is accessible only to authorized users. This goal prevents unauthorized access or misuse through measures like encryption and MFA. For example, a healthcare organization should encrypt patient records so that only authorized healthcare workers can access them.
- Integrity: Maintains data accuracy and consistency, ensuring data is not altered by unauthorized parties. Whether accidental or intentional, any unauthorized modification violates data integrity. In practice, a bank may rely on data integrity to ensure transaction records cannot be altered between the time a payment is made and when it is processed.
- Availability: Guarantees that systems, data and networks are accessible to authorized users when they are needed. This means both preventing service disruptions and having recovery plans set just in case. An example of this is a company that invests in disaster recovery systems to ensure its online platform remains online even during a hardware failure.
IT security threats: The most common types of attacks
Understanding the most common types of cyber attacks and IT security threats helps organizations learn how to defend against them.
Malware and ransomware
Malware is malicious software designed to infiltrate, harm or gain unauthorized access to a system. One of the most damaging types of malware is ransomware, in which cybercriminals encrypt an organization’s files and demand a ransom payment for their release. Successful ransomware attacks can disrupt operations, lock organizations out of critical systems or cause serious financial loss.
Phishing and social engineering
Phishing attacks involve manipulating individuals into sharing sensitive information, such as login credentials, by impersonating a trusted source. Phishing is one of the most common forms of social engineering — a category of attacks that exploits human behavior rather than security vulnerabilities to gain unauthorized access. Attackers exploit people because they’re harder to patch than software, which is why phishing remains one of the most common entry points for data breaches.
Insider threats
Insider threats involve current or former employees, contractors or partners who misuse their access to an organization’s systems and data. Whether intentional or negligent, insider threats are especially difficult to detect and contain because insiders already have legitimate access to sensitive information and critical systems.
DDoS attacks
Distributed Denial-of-Service (DDoS) attacks overwhelm a targeted server, network or application with an influx of traffic, making it unavailable to legitimate users. These types of attacks are often used to cause reputational damage or serve as a distraction while another cyber attack is carried out. Organizations with customer-facing applications or online services are especially vulnerable to these kinds of attacks.
Implementing IT security
Modern IT security relies heavily on Identity and Access Management (IAM) because controlling who has access to what is one of the most effective ways to reduce an organization’s attack surface. Whether an employee logs in to a corporate application or an administrator accesses sensitive data, verifying identity and enforcing granular access controls are essential to keeping systems and data secure. This means organizations must implement the Principle of Least Privilege (PoLP) by requiring strong authentication methods like MFA and securing credentials with enterprise password managers or Privileged Access Management (PAM) solutions.
Privileged Access Management (PAM)
PAM is a cybersecurity solution that enables organizations to control and monitor access to their most critical systems and accounts. Privileged accounts, which are typically held by administrators and DevOps teams, have elevated permissions that can grant cybercriminals broad access to sensitive data and infrastructure if compromised. By enforcing least-privilege access, automatically rotating credentials and providing full session visibility, PAM significantly reduces the risk of data breaches and insider threats.
Zero-trust security and RBAC
Zero-trust security and Role-Based Access Control (RBAC) work together to ensure access is limited by user identity and role. Zero trust operates on the principle of “never trust, always verify,” meaning no user, device or system is granted access by default and every access request is continuously authenticated. RBAC complements this by assigning permissions based on a user’s job rather than on an individual basis, ensuring that each role has access only to what’s necessary. Combined, these two approaches make it much harder for cybercriminals to move laterally across a network or exploit over-provisioned accounts.
Password management
An enterprise password manager is a solution that securely stores, manages and autofills credentials across an organization’s accounts and applications. Instead of relying on employees to create and manage passwords manually – often leading to weak or reused passwords – an enterprise password manager enforces strong, unique passwords for each account and ensures they’re stored in an encrypted vault. Using a password manager removes one of the most common causes of data breaches, giving IT teams control over credential security across an entire organization.
Multi-Factor Authentication (MFA) and passwordless authentication
MFA strengthens account security by requiring users to verify their identity with two or more factors before access is granted. For example, a user may authenticate with a password and a biometric scan; even if the password is compromised, access requires the second factor. As organizations seek to move beyond traditional password authentication entirely, passwordless authentication methods like passkeys and biometrics are becoming increasingly common. These passwordless methods eliminate the credential vulnerabilities that MFA was intended to compensate for in the first place.
Secrets management
In IT security, secrets refer to credentials used by applications and systems to authenticate and communicate with each other. Some examples include API keys, tokens and certificates. Unlike traditional passwords used by human users, secrets are often hardcoded into configuration files and code repositories, making them an overlooked but very exploitable attack vector. A secrets management solution ensures that secrets are securely stored, automatically rotated and accessible only to the systems and services that need them.
Encryption and secure data transmission
Encryption is the process of converting data into an unreadable format that can be read only by an authorized party with the correct decryption key. As one of the most essential aspects of IT security, encryption ensures that even if data is intercepted or accessed by an unauthorized user, it remains unreadable and unusable. Encryption applies to data at rest and in transit, protecting both stored data and information transmitted across networks. Secure transmission protocols like Transport Layer Security (TLS) protect data as it moves between systems and users, ensuring that sensitive data cannot be tampered with or intercepted while in transit.
How AI is changing cyber attacks
Artificial Intelligence (AI) is enabling cybercriminals to carry out attacks at faster speeds, on a larger scale and with greater technical sophistication. AI is being used to generate convincing phishing emails with advanced social engineering tactics that are becoming increasingly difficult for employees to identify. Now more than ever, IT and security teams must develop controls capable of protecting systems, data and credentials against highly automated and intelligent cyber threats. Following best practices like enforcing strong access controls, MFA and PAM is crucial to defending against AI-powered cyber attacks. Keeper helps organizations put these defenses in place with a unified identity security platform that combines enterprise password management, MFA enforcement, secrets management and PAM to ensure that all identities, credentials and systems are protected.
Start your free trial of KeeperPAM to improve your organization’s IT security strategy.
Frequently asked questions
What is IT security, explained simply?
IT security is the practice of protecting an organization’s devices, networks and data from unauthorized access and cyber attacks. You can think of IT security as a collection of alarms and locks designed to keep a company’s digital systems and sensitive data safe from people who don’t need access to them.
What is the difference between IT security and data protection?
Although IT security and data protection are related concepts, they are not the same. IT security focuses on protecting data, networks and systems from unauthorized access and broader cyber threats. Data protection, however, refers to the legal responsibility organizations have for how personal data is collected, stored and handled — typically governed by compliance regulations such as the GDPR.
Why is IT security important for companies?
IT security is foundational for organizations because one data breach can have severe consequences across an organization. Financially, cyber attacks can result in high costs from incident response to legal fines. From a data protection standpoint, organizations are responsible for protecting sensitive customer, employee and business data, and failing to do so can cause long-term reputational damage.
