Under the hood of cybersecurity

Every digital interaction – whether it is sending an email, accessing cloud services, or processing a financial transaction relies on one invisible factor – cybersecurity. Without it, business continuity, trust, and even national security collapse. Cybersecurity today is not an optional layer of IT. It is a foundation of digital safety.

The article provides an overview of what cybersecurity really is including its definitions, frameworks, real cases, and insights that highlight both risks and responses.

According to the US National Institute of Standards and Technology (mostly known as NIST), cybersecurity is the ability to protect or defend the use of cyberspace from cyberattacks.¹

Other institutions expand the definition. IBM describes it as the practice of protecting critical systems and sensitive information from digital attacks.²

Key principles often follow the ‘CIA triad’.

Together, these principles define the real backbone of modern digital safety.

Cybersecurity spans multiple domains. By addressing each layer, organizations and individuals create a so called defense-in-depth strategy.

Domain	Objective	Example controls
Network security	Protect networks mostly against unauthorized access and malware	Firewalls, IDS/IPS
Application security	Secure applications throughout their lifecycle	Code scanning and patching
Information security	Protect confidentiality and integrity of data, both in store and transit	Encryption, DLP
Operational security	Manage access, permissions, and policies for operations	IAM, zero-trust models
Cloud security	Secure data along the workloads in cloud environments	CASB, cloud firewalls
Endpoint security	Safeguard user devices from intrusion	EDR, antimalware
Resilience	Ensure systems are able to recover after incidents	Backup, disaster recovery

In 2024, The operation called Salt Typhoon exploited telecom providers across the USA and Europe, infiltrating systems for over a year(!) before being discovered. The attack leveraged mostly outdated systems and missing MFA, showing the need for strict patching and zero-trust policies.⁹

Cybercriminals gained unauthorized access to multiple customer environments hosted by Snowflake, exposing sensitive data from various industries. This incident highlighted risks of relying on cloud service provider and the shared responsibility model.¹⁰

More than 2000 laptops and phones went missing across government departments in a single year. Even with encryption, the physical loss of assets is a national-level risk.¹¹

Strong cybersecurity relies on structured frameworks that guide strategy and operations. Three essential pillars of cybersecurity are zero trust, cyber resilience, and regulatory alignment.

Zero Trust assumes no user, device, or overall a connection is trusted by default. Access is granted only after continuous verification. Key principles include:

• Least-privilege access – users and systems receive only necessary permissions, without exceptions,
• Continuous verification – authentication and authorization happen at every step,
• Network segmentation – networks and applications are divided to limit lateral movement.

There is no miracles in cyber world. Even with strong defenses, breaches happen. Cyber resilience focuses on detecting, responding, and recovering from them. Key principles include:

• Backup and recovery – regular, tested backups reduce downtime and data loss,
• Business continuity – critical operations may continue during incidents,
• Incident response exercises – simulations prepare teams for fast and effective response.

Frameworks like the EU NIS2 Directive and DORA define security baselines, incident reporting, and many more. Key principles include:

• Security baselines – minimum technical and organizational measures,
• Incident reporting – timely communication with authorities,
• Financial penalties – fines for non-compliance incentivize strong security.

• Zero Trust – prevents unauthorized access,
• Cyber Resilience – ensures operations continue after breaches,
• Regulatory Alignment – formalizes processes and accountability.

Together, these frameworks provide a proactive, comprehensive, and auditable cybersecurity profile.

Nowadays, cybersecurity is defined by scale, speed and sophistication. Cybercriminals leverage automation and AI at extreme levels. Yet the solutions like Zero Trust, AI-assisted detection, incident response are available to reduce costs and impact.

For you as a professional, cybersecurity is not just an abstract IT concern. It is your organization’s operational backbone and its most strategic investment in digital safety.

Sources

1. NIST, “cybersecurity glossary” ↩︎
2. IBM, “What is cybersecurity” ↩︎
3. Cybersecurityventures, “Cybercrime To Cost The World $12.2 Trillion Annually By 2031” ↩︎
4. Globalsecuritymag, “Global Cybercrime Cost is Growing 12x Faster than Total Cybersecurity Spending” ↩︎
5. Morganlewis, “Study Finds Average Cost of Data Breaches Significantly Increased Globally in 2024” ↩︎
6. Sentinelone, “Key Cyber Security Statistics for 2025” ↩︎
7. Asisonline, “1.8 Billion Credentials Stolen in the First Half of 2025—an 800% Increase” ↩︎
8. Techradar, “AI powering a “dramatic surge” in cyberthreats as automated scans hit 36,000 per second” ↩︎
9. Wikipedia, “2024 global telecommunications hack” ↩︎
10. Wikipedia, “Snowflake data breach” ↩︎
11. Theguardian, “Thousands of UK government laptops, phones and tablets have been lost or stolen” ↩︎