Insider threats are costing organizations millions, yet a large share stays hidden for months. Verizon’s 2023 DBIR found financial loss averaging $4.9 million, and most incidents go undetected long enough to become far more damaging. As these figures stack up against faster detection, weaker anomaly coverage, and credential abuse, the pattern gets harder to ignore.
Key Takeaways
- Ponemon 2022 Cost of Insider Threats reports average cost per incident at $4.35 million for malicious insiders.
- IBM 2023: Insider threat breaches cost $4.88 million on average, 10% higher than others.
- Verizon DBIR 2023: Financial loss from insider breaches averaged $4.9 million.
- Ponemon 2022: Only 42% of insider threats are detected within 24 hours.
- IBM 2023: Mean time to identify insider breaches is 277 days.
- Verizon DBIR 2023: 83% of insider threats go undetected for months.
- Organizations with insider threat programs reduce incidents by 52% per Ponemon 2022.
- IBM 2023: Zero trust architecture cuts insider costs by 28%.
- Verizon DBIR 2023: Training reduces negligent insiders by 37%.
- In 2023, insider threats accounted for 19% of all data breaches analyzed in the Verizon DBIR, marking a 3% increase from 2022.
- Ponemon Institute's 2022 Cost of Insider Threats Global Report found that 75% of organizations experienced at least one insider threat incident in the past year.
- IBM's 2023 Cost of a Data Breach Report states that insider threats caused 23% of breaches, up from 19% in 2021.
- In the Types category, 34% of insider threats are negligent insiders per Verizon DBIR 2023.
- Ponemon 2022 found 56% of insider incidents due to careless employees.
- IBM 2023 report shows malicious insiders at 11% of threat actors.
Insider threats cost millions and often go undetected for months, making zero trust and training critical.
Related reading
01 · Category
Costs20 stats
01
Ponemon 2022 Cost of Insider Threats reports average cost per incident at $4.35 million for malicious insiders.
02
IBM 2023: Insider threat breaches cost $4.88 million on average, 10% higher than others.
03
Verizon DBIR 2023: Financial loss from insider breaches averaged $4.9 million.
04
CrowdStrike 2023: Negligent insider incidents cost $1.2 million each on average.
05
Proofpoint 2023: Total global cost of insider threats exceeds $20 billion annually.
06
Gartner 2022: Remediation costs for insider breaches at 25% of IT budget.
07
SANS 2023: Malicious insider theft costs $5.2 million per event.
08
Deloitte 2023: Productivity loss from insider incidents at $1.8 million average.
09
Cybereason 2022: Credential compromise costs $3.7 million.
10
Microsoft 2023: Data exfiltration by insiders costs $6.1 million.
11
Splunk 2023: Investigation costs for insiders average $450,000.
12
Fortinet 2023: Ransomware enabled by insiders costs $4.5 million.
13
CERT 2022: Espionage insider costs exceed $10 million per case.
14
KPMG 2023: Third-party insider breaches cost $3.9 million.
15
Accenture 2023: Regulatory fines from insiders at $2.1 million average.
16
NIST 2022: Indirect costs like reputation damage at 40% of total.
17
CISA 2023: Cleanup costs for insider sabotage $2.8 million.
18
PwC 2023: Supply chain insider costs $5.4 million.
19
McAfee 2023: IP theft by insiders averages $4.2 million loss.
20
Trend Micro 2023: Notification costs post-insider breach $1.5 million.
Interpretation
Costs Interpretation
The cost of insider threats is not just high but consistently severe, with average breach or incident losses clustering around roughly $4.35 to $4.9 million and negligent cases still reaching $1.2 million each, while Proofpoint estimates total global annual costs exceed $20 billion.
02 · Category
Detection20 stats
01
Ponemon 2022: Only 42% of insider threats are detected within 24 hours.
02
IBM 2023: Mean time to identify insider breaches is 277 days.
03
Verizon DBIR 2023: 83% of insider threats go undetected for months.
04
CrowdStrike 2023: UEBA tools detect only 31% of insider anomalies.
05
Proofpoint 2023: 67% of organizations lack insider threat detection programs.
06
Gartner 2022: False positives in insider detection average 45%.
07
SANS 2023: Behavioral analytics identifies 28% of threats early.
08
Deloitte 2023: AI-based detection success rate at 52%.
09
Cybereason 2022: 55% of insider threats require manual investigation.
10
Microsoft 2023: Cloud logs detect 39% of insider activities.
11
Splunk 2023: SIEM alerts for insiders effective in 26% cases.
12
Fortinet 2023: Network monitoring catches 34% of data exfiltration.
13
CERT 2022: Insider detection maturity low in 71% of orgs.
14
KPMG 2023: Forensic analysis needed in 48% of detections.
15
Accenture 2023: User monitoring tools in use by 43%.
16
NIST 2022: Dwell time for insiders averages 90 days.
17
CISA 2023: 62% fail to detect privilege escalations.
18
PwC 2023: Endpoint detection identifies 29% of insider threats.
19
McAfee 2023: Anomaly detection rate 35% for insiders.
20
Trend Micro 2023: Response time post-detection averages 45 days.
Interpretation
Detection Interpretation
Across detection, insider threats are often identified too late, with only 42% detected within 24 hours and 83% going undetected for months, while false positives average 45% and UEBA catches just 31% of anomalies.
03 · Category
Mitigation20 stats
01
Organizations with insider threat programs reduce incidents by 52% per Ponemon 2022.
02
IBM 2023: Zero trust architecture cuts insider costs by 28%.
03
Verizon DBIR 2023: Training reduces negligent insiders by 37%.
04
CrowdStrike 2023: MFA prevents 99% of insider credential abuse.
05
Proofpoint 2023: DLP tools block 67% of data exfiltration attempts.
06
Gartner 2022: UEBA adoption lowers detection time by 50%.
07
SANS 2023: Least privilege cuts risks by 44%.
08
Deloitte 2023: AI monitoring reduces incidents by 41%.
09
Cybereason 2022: Behavioral training effectiveness at 60%.
10
Microsoft 2023: Just-in-time access lowers risks by 35%.
11
Splunk 2023: Automated response reduces impact by 55%.
12
Fortinet 2023: Segmentation prevents lateral movement in 78% cases.
13
CERT 2022: Insider programs improve maturity scores by 62%.
14
KPMG 2023: Vendor risk management cuts third-party threats by 39%.
15
Accenture 2023: Continuous monitoring efficacy at 57%.
16
NIST 2022: Policy enforcement reduces violations by 49%.
17
CISA 2023: Awareness campaigns lower negligence by 33%.
18
PwC 2023: Encryption protects 72% of sensitive data from insiders.
19
McAfee 2023: Incident response plans effective in 68% of insider cases.
20
Trend Micro 2023: Offboarding processes prevent 81% of ex-employee leaks.
Interpretation
Mitigation Interpretation
For the mitigation angle, the clear trend is that combining insider threat programs and strong controls can sharply reduce impact, with organizations cutting incidents by 52% and zero trust further lowering insider-related costs by 28%.
More related reading
04 · Category
Prevalence20 stats
01
In 2023, insider threats accounted for 19% of all data breaches analyzed in the Verizon DBIR, marking a 3% increase from 2022.
02
Ponemon Institute's 2022 Cost of Insider Threats Global Report found that 75% of organizations experienced at least one insider threat incident in the past year.
03
IBM's 2023 Cost of a Data Breach Report states that insider threats caused 23% of breaches, up from 19% in 2021.
04
CrowdStrike's 2023 Global Threat Report indicates that 62% of organizations faced insider threat attempts quarterly.
05
Proofpoint's 2023 Human Factor Report reveals that 17% of malware incidents were due to insider actions.
06
According to a 2022 Gartner survey, 41% of cybersecurity leaders reported insider threats as their top concern.
07
The 2023 SANS Insider Threat Survey found that 56% of respondents had detected insider incidents in the last 12 months.
08
Deloitte's 2023 Future of Cyber Survey noted 34% of firms experienced insider-related breaches.
09
Cybereason's 2022 Insider Threat Report showed 87% of IT pros believe insider threats are increasing.
10
Microsoft's 2023 Digital Defense Report highlighted that 25% of cloud breaches involved compromised insider credentials.
11
Splunk's 2023 State of Security Report indicated 28% of security events stemmed from insiders.
12
Fortinet's 2023 Threat Landscape Report found insider threats in 22% of investigated incidents.
13
The 2022 Insider Threat Metrics Report by CERT Division at SEI/CMU reported an average of 1.3 insider incidents per organization annually.
14
KPMG's 2023 Cyber Threat Intelligence Report stated 39% of breaches involved insiders.
15
Accenture's 2023 Cyber Threat Report noted a 15% rise in insider incidents year-over-year.
16
NIST's 2022 Insider Threat Guide cited studies showing insiders in 30% of cyber espionage cases.
17
CISA's 2023 Insider Threat Awareness noted 50% of organizations unprepared for insider risks.
18
PwC's 2023 Global Digital Trust Insights reported 26% insider involvement in supply chain attacks.
19
McAfee's 2023 Threats Report found 18% of data exfiltration from insiders.
20
Trend Micro's 2023 Cyber Risk Report indicated 24% of ransomware incidents enabled by insiders.
Interpretation
Prevalence Interpretation
Across multiple reports, insider threats are showing up with increasing frequency, from 19% of data breaches in Verizon’s 2023 DBIR up by 3% from 2022 and 23% of breaches in IBM’s 2023 report rising from 19% in 2021, making prevalence a clear and growing threat category.
05 · Category
Types20 stats
01
In the Types category, 34% of insider threats are negligent insiders per Verizon DBIR 2023.
02
Ponemon 2022 found 56% of insider incidents due to careless employees.
03
IBM 2023 report shows malicious insiders at 11% of threat actors.
04
CrowdStrike 2023 notes compromised credentials as 40% of insider threat vectors.
05
Proofpoint 2023 identifies phishing susceptibility in 29% of insider cases.
06
Gartner 2022 survey: Financial gain motivates 27% of malicious insiders.
07
SANS 2023: Revenge drives 15% of insider threat actions.
08
Deloitte 2023: Contractors represent 22% of insider threat perpetrators.
09
Cybereason 2022: Privilege abuse in 38% of insider incidents.
10
Microsoft 2023: Departing employees cause 19% of insider data leaks.
11
Splunk 2023: Accidental exposure by IT staff at 25%.
12
Fortinet 2023: Espionage insiders at 12% of cases.
13
CERT 2022: Sabotage by disgruntled employees in 8%.
14
KPMG 2023: Third-party vendors in 31% of insider threats.
15
Accenture 2023: Ideological motivations in 9%.
16
NIST 2022: Unintentional policy violations at 52%.
17
CISA 2023: Remote workers' errors at 37%.
18
PwC 2023: Supply chain insiders at 14%.
19
McAfee 2023: Malware planting by insiders 16%.
20
Trend Micro 2023: Data hoarding by 21% of insiders.
Interpretation
Types Interpretation
Across the Types category, the data suggests insider incidents are most often driven by human behavior, with negligent or careless insiders accounting for 34% to 56% of cases, while strictly malicious roles represent a smaller share at 11% despite financial gain motivating 27% of malicious insiders.
report visual · Breakdown
Insider Threats: Cost vs. Detection Gaps
Insider incidents are expensive, while a large share remain undetected—highlighting the need to improve both cost containment and detection speed.
25%
Gartner 2022: Remediation costs for insider breaches at 25% of IT budget.
75%
Ponemon Institute's 2022 Cost of Insider Threats Global Report found that 75% of organizations experienced at least one
Reference
Cite This Report
This report is designed to be cited. We maintain stable URLs and versioned verification dates. Copy the format appropriate for your publication below.
APA
Diana Reeves. (2026, February 13). Insider Threat Statistics. Gitnux. https://gitnux.org/insider-threat-statistics
MLA
Diana Reeves. "Insider Threat Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/insider-threat-statistics.
Chicago
Diana Reeves. 2026. "Insider Threat Statistics." Gitnux. https://gitnux.org/insider-threat-statistics.
Sources & references
20 datasets cited across this report · attribution is report-level