Cybersecurity Statistics 2024: A Year-End Review (Updated 2026)

The cybersecurity landscape in 2024 was defined by escalating breach volumes, rising costs, and the rapid emergence of AI as both a defensive tool and an attack vector. With major reports from IBM, Verizon, Google, and Sophos now providing full-year retrospectives, the picture is clear: organizations that delayed investment in proactive security paid a steep price. This review compiles the most significant cybersecurity statistics from 2024, drawn exclusively from 2025 and 2026 publications that analyzed the full year of data, along with updates on how the numbers have shifted since.

Key Cybersecurity Statistics From 2024 at a Glance

• The average global cost of a data breach reached $4.88 million, a 10% year-over-year increase (IBM Cost of a Data Breach 2025).

• Ransomware appeared in 44% of all confirmed breaches, up from 32% the prior year (Verizon 2025 DBIR via Help Net Security).

• Verizon's 2025 DBIR analyzed 12,195 confirmed data breaches, a 34% increase over the previous reporting period (Verizon 2025 DBIR via Help Net Security).

• Third-party involvement in breaches doubled to 30%, up from 15% (Verizon 2025 DBIR via Help Net Security).

• Attackers exploited 75 zero-day vulnerabilities in the wild during 2024 (Google Threat Intelligence 2025).

• The median ransomware demand stood at $2.75 million before negotiations (Sophos State of Ransomware 2025).

• Healthcare remained the costliest sector for breaches at $9.77 million per incident (IBM Cost of a Data Breach 2025).

• One in five breaches was linked to shadow AI usage within organizations (IBM Cost of a Data Breach 2025).

• 64% of ransomware victims refused to pay the ransom, up from 50% two years prior (Verizon 2025 DBIR via Help Net Security).

• Stolen credentials remained the top breach vector at 22%, followed by vulnerability exploitation at 20% (Verizon 2025 DBIR via Help Net Security).

The Cost of Data Breaches Continued to Climb

The financial toll of data breaches reached new highs in 2024. According to IBM's 2025 Cost of a Data Breach Report, the global average cost rose to $4.88 million per breach, marking a 10% increase compared to the prior year. Healthcare organizations bore the heaviest burden at $9.77 million per breach, maintaining their position as the most expensive industry for the fourteenth consecutive year. Financial services followed at $5.86 million to $6.08 million, while manufacturing breaches averaged $5.56 million (VikingCloud 2026 Cybersecurity Statistics).

The growing complexity of hybrid cloud environments played a significant role. Breaches in hybrid cloud setups averaged $5.05 million, compared to $4.01 million for on-premises incidents alone. Shadow AI emerged as a new cost driver, adding as much as $670,000 to the average breach cost when employees used unapproved AI tools that exposed sensitive data. IBM found that 63% of breached organizations lacked AI governance policies, and 97% of those with AI-related breaches had inadequate access controls in place.

Ransomware Dominated the Threat Landscape

Ransomware solidified its position as the most disruptive cyber threat in 2024. The Verizon 2025 DBIR found ransomware present in 44% of all confirmed breaches, a 37% jump from the previous year. Small and medium-sized businesses were disproportionately affected, with ransomware appearing in 88% of their breaches compared to 39% for larger organizations.

The Sophos State of Ransomware 2025 report, which surveyed organizations about their 2024 experiences, revealed that exploited vulnerabilities were the leading root cause at 29% of incidents. Phishing and compromised credentials each accounted for 21%. The median ransom demand hit $2.75 million, though actual payments were lower at $1.26 million. Recovery costs, including downtime, remediation, and lost business, averaged $3.12 million per incident.

On a more positive note, victim organizations increasingly pushed back. Verizon reported that 64% of ransomware victims refused to pay, up from 50% just two years earlier. This shift reflects better backup strategies and stronger organizational policies against funding criminal operations.

Zero-Day Exploits Shifted Toward Enterprise Targets

Google's Threat Intelligence Group published its 2024 zero-day review in early 2025, documenting 75 zero-day vulnerabilities exploited in the wild. While the total dropped from 98 in 2023, the targeting pattern shifted significantly. Enterprise technologies accounted for 44% of all zero-days (33 vulnerabilities), up from 37% the prior year. Security and networking products alone attracted 20 of those 33 enterprise-targeted exploits, with products from Ivanti, Palo Alto Networks, and Cisco among the most frequently hit.

Microsoft was the most targeted vendor with 26 zero-days, followed by Google with 11 and Ivanti with 7. The report noted that Ivanti's third-place ranking marked the first time a security vendor was targeted more frequently than a mainstream consumer technology company. Attribution data showed that espionage actors drove 53% of attributed exploits, with Chinese state-backed groups and commercial surveillance vendors leading the activity.

Third-Party Risk and Supply Chain Vulnerabilities Surged

One of 2024's most striking trends was the explosion in supply chain and third-party breaches. The Verizon 2025 DBIR found that 30% of all breaches involved a third party, double the 15% reported in the prior year. This included software supply chain compromises, credential-sharing incidents with vendors, and breaches originating in managed service provider environments.

Credential hygiene remained a systemic problem. Verizon identified 2.8 billion passwords posted to criminal forums during 2024, and 30% of compromised systems were enterprise-licensed devices. Nearly half (46%) of systems with corporate logins were unmanaged, creating blind spots that attackers readily exploited. On platforms like GitHub, leaked secrets took a median of 94 days to be remediated, giving threat actors ample time to capitalize.

The rise of generative AI introduced new dimensions to third-party risk. IBM found that 15% of employees regularly accessed GenAI platforms on corporate devices, with 72% using non-corporate email accounts and only 17% authenticating through corporate SSO. These unmonitored AI interactions created data exfiltration pathways that most security teams were not equipped to detect.

Identity-Based Attacks and Social Engineering Escalated

The CrowdStrike 2025 Global Threat Report, analyzing 2024 threat data, revealed a sharp pivot toward identity-based intrusions. A full 79% of initial access attempts were malware-free, relying instead on stolen credentials, session hijacking, and social engineering. Voice phishing (vishing) attacks surged 442% between the first and second halves of 2024, as adversaries used AI-generated voice calls to impersonate IT help desks and trick employees into handing over credentials or installing remote access tools.

Cloud environment intrusions rose 26% year over year, with cloud-conscious cases accounting for the majority of cloud incidents CrowdStrike investigated. Adversaries moved faster than ever: the average eCrime breakout time dropped to just 48 minutes, with the fastest recorded breakout clocking in at 51 seconds from initial access to lateral movement. China-nexus cyber espionage operations surged 150%, with targeted industries including financial services, media, and manufacturing seeing up to 300% increases in attack volume.

Incident Response Data Confirmed the Exploitation Trend

Mandiant's M-Trends 2025 report, drawing on frontline incident response engagements throughout 2024, reinforced many of the patterns seen in the Verizon and CrowdStrike data. Exploits remained the most common initial infection vector for the fifth consecutive year, accounting for 33% of intrusions. Stolen credentials followed at 16%, while email phishing represented 14% of cases.

The global median dwell time held steady at 11 days, a figure that has plateaued after years of improvement. However, ransomware-related intrusions had a significantly shorter median dwell time of just 5 days, reflecting attackers' urgency to encrypt before detection. Mandiant found that financial services was the most targeted industry in 2024 at 17.4% of investigations, followed by business and professional services at 11.1% and high technology at 10.6%. Notably, three of the four most exploited vulnerabilities in 2024 were zero-day flaws found in security and networking products, underscoring the same enterprise-targeting trend identified in Google's zero-day analysis.

How the Numbers Changed in 2025 and 2026

The trends identified in 2024 data have largely accelerated. The Sophos State of Ransomware 2025 report covering early 2025 experiences shows that while ransomware attack rates remain high, defenses have improved: only 49% of attacks resulted in data encryption, down from 66% in 2024, and attacks stopped before encryption more than doubled from 22% in 2023 to 47% in 2025. Median ransom demands dropped 56% to $1.2 million, and mean remediation costs fell to $1.84 million.

Zero-day exploitation, however, has continued to climb. Google's 2025 zero-day review documented 90 exploited zero-days, up from 75 in 2024, with half targeting enterprise systems. AI-driven phishing has become the dominant initial access method, with industry researchers estimating that 80% of phishing attempts now leverage generative AI to craft convincing messages (VikingCloud 2026 Cybersecurity Statistics). Shadow AI governance has moved from a niche concern to a board-level priority as breach costs tied to unmanaged AI tools continue to rise.

How Managed IT Services Can Help

The 2024 data makes one point unmistakably clear: organizations without dedicated security expertise and around-the-clock monitoring are the ones paying the highest costs. SMBs face ransomware in 88% of their breaches, third-party risks are doubling year over year, and shadow AI is creating exposures that most in-house teams cannot track.

A managed IT services partner provides the continuous monitoring, vulnerability management, and incident response capabilities that these statistics show are essential. From patching the zero-days that attackers are targeting within hours to managing third-party access controls and enforcing AI governance policies, the right partner turns these statistics from threats into managed risks. Visit manageditservices.ai to learn how proactive managed services can protect your organization from the threats that defined 2024 and continue to evolve today.