Ninety-five percent of all cybersecurity breaches trace back to human error. These mistakes are not confined to IT, as medical errors rank as a leading cause of death and human factors drive most industrial and transport failures. This data reveals a universal pattern of vulnerability.
Key Takeaways
- 95% of cybersecurity breaches are caused by human error like phishing.
- 17% of data breaches are the result of accidental cloud misconfigurations.
- 43% of employees have made a mistake at work that compromised cybersecurity.
- Medical errors are the third leading cause of death in the US, accounting for over 250,000 deaths annually.
- 75% of surgical errors are attributed to communication breakdowns within the team.
- Medication administration errors occur in 1 out of every 5 doses given in hospitals.
- 80% of major power outages are caused by human error during maintenance.
- Human error was a contributing factor in 100% of major nuclear power plant disasters like Chernobyl.
- 50% of safety system failures in nuclear plants are due to human calibration errors.
- Human error is responsible for approximately 80% of all aviation accidents.
- Fatigue is a contributing factor in 20% of all road traffic accidents worldwide.
- 94% of motor vehicle crashes are caused by human error or choice.
- 70% of offshore oil and gas incidents are caused by human performance factors.
- Human error accounts for 90% of failures in the manufacturing sector.
- Slips, trips, and falls due to negligence account for 15% of all accidental deaths in the workplace.
Human error drives most security breaches, from phishing and passwords to cloud misconfigurations and insider actions.
Related reading
01 · Category
Cybersecurity & IT28 stats
01
95% of cybersecurity breaches are caused by human error like phishing.
02
17% of data breaches are the result of accidental cloud misconfigurations.
03
43% of employees have made a mistake at work that compromised cybersecurity.
04
34% of data leaks are caused by employees sending sensitive information to the wrong person.
05
Weak or reused passwords remain the root cause of 81% of hacking-related breaches.
06
Ransomware attacks have a 60% success rate when targeting human vulnerabilities.
07
20% of organizations lost customers due to a human-error-driven data breach.
08
33% of business disruptions are caused by human error during IT patching.
09
Lost or stolen devices, a human oversight, cause 15% of enterprise data breaches.
10
60% of employees admit to using the same password for multiple work accounts.
11
Phishing volume increased by 22% because attackers successfully exploit human curiosity.
12
25% of IT downtime is caused by accidental deletion of files by administrators.
13
Misconfigured cloud servers exposed over 1 billion records in 2023.
14
11% of security breaches involve "social engineering" targeting human psychology.
15
90% of malware is delivered via email, relying on a human to click a link.
16
52% of data breaches are caused by "malicious insiders" or human error.
17
Shadow IT, where employees bypass security, accounts for 30% of successful attacks.
18
7% of employees have shared work login credentials with people outside the company.
19
90% of data center downtime incidents involve some form of human error.
20
47% of employees cited "distraction" as the reason they fell for a phishing scam.
21
21% of IT professionals admit to not changing default passwords on network devices.
22
Human error in firewall configuration leads to 40% of network vulnerabilities.
23
14% of healthcare data breaches are caused by physical theft of records by staff.
24
25% of employees have accidentally shared a business document with a personal contact.
25
8% of all data breaches are caused by "malicious insiders" exploiting human trust.
26
60% of small companies go out of business within 6 months of a human-error-led cyber attack.
27
1 in 10 computer users will click on a link in a suspicious email.
28
35% of IT security incidents start with an employee losing a USB drive.
Interpretation
Cybersecurity & IT Interpretation
The chilling truth of cybersecurity is that our greatest vulnerability doesn't sleep in a server rack; it wakes up every morning, makes coffee, and tries to get through its inbox before the first meeting.
02 · Category
Medicine & Healthcare30 stats
01
Medical errors are the third leading cause of death in the US, accounting for over 250,000 deaths annually.
02
75% of surgical errors are attributed to communication breakdowns within the team.
03
Medication administration errors occur in 1 out of every 5 doses given in hospitals.
04
10% of all hospital admissions result in an adverse event caused by preventable error.
05
Fatigue among residents leads to a 36% increase in serious medical errors.
06
Diagnostic errors affect approximately 12 million adults in the US every year.
07
44,000 to 98,000 people die each year in hospitals due to preventable medical errors.
08
31% of medical malpractice claims are for errors in diagnosis.
09
60% of nursing errors are the result of interruptions during medication preparation.
10
Wrong-site surgery occurs approximately 40 times per week in the United States.
11
Healthcare software bugs caused by coding errors affect 2% of patient records.
12
20% of obstetric complications are linked to human communication failures during labor.
13
5% of patients in high-income countries experience harm from medication errors.
14
Inaccurate patient identification leads to 13% of all surgical errors.
15
50% of hand-off reports between nurses contain missing or incorrect information.
16
Retained surgical items (sponges/tools) occur in 1 out of 10,000 procedures due to count errors.
17
30% of emergency room delays are caused by human administrative errors.
18
Mislabeling of laboratory specimens occurs at a rate of 1 per 1,000 samples.
19
15% of patient harm is caused by a failure to monitor vital signs correctly.
20
25% of anesthesia-related deaths are caused by human technical errors during intubation.
21
Poor sterile technique by medical staff causes 30% of surgical site infections.
22
38% of errors in medicine occur during the transcription of prescriptions.
23
18% of medical errors are due to inadequate access to patient lab results.
24
7% of prescriptions contain errors made by the prescribing physician.
25
50% of medical equipment failures are actually caused by improper operator setup.
26
12% of emergency medicine errors are due to failures in triage categorization.
27
1 in 20 patients in primary care clinics experience a preventable diagnostic error.
28
Handwashing compliance in hospitals is often below 50%, leading to infections.
29
22% of medication errors are due to confusion over drug names that sound alike.
30
10% of hospital deaths are linked to a failure to rescue a patient from a declining state.
Interpretation
Medicine & Healthcare Interpretation
It seems the leading cause of death in American hospitals is a chronic, systemic plague of human oversights, where the simple act of clear communication and basic procedure could save more lives than any miracle drug ever will.
03 · Category
Nuclear & Energy30 stats
01
80% of major power outages are caused by human error during maintenance.
02
Human error was a contributing factor in 100% of major nuclear power plant disasters like Chernobyl.
03
50% of safety system failures in nuclear plants are due to human calibration errors.
04
Operational errors cause 40% of unplanned shutdowns in oil refineries.
05
70% of security incidents at energy utilities involve insider mistakes.
06
1 in 3 offshore drilling incidents is caused by a failure to follow standard operating procedures.
07
22% of oil spills are caused by human error during bunkering operations.
08
Procedural violations account for 45% of critical errors in the power generation industry.
09
15% of pipeline leaks are the result of improper installation by workers.
10
Improper maintenance of safety valves contributes to 12% of energy sector gas leaks.
11
40% of offshore oil spills are caused by operator negligence during transfer operations.
12
1 in 5 worker injuries in the coal industry is due to failure to follow safety signs.
13
60% of renewable energy turbine downtime is due to human maintenance errors.
14
Incorrect valve settings cause 25% of pressure-related accidents in chemical plants.
15
Human error accounts for 85% of incidents involving the handling of radioactive materials.
16
30% of power grid brownouts are triggered by human error during switching operations.
17
Misreading of control panel gauges contributed to 15% of boiler explosions.
18
20% of dam failures or near-misses are caused by operational mismanagement.
19
70% of errors in nuclear radioactive waste management are due to poor documentation.
20
Neglecting to perform routine inspections led to 12% of power plant fires.
21
10% of global greenhouse gas emissions from fossil fuels involve human-led leaks.
22
Human error in nuclear plant control rooms increases significantly after 8 hours of duty.
23
40% of natural gas pipeline accidents are caused by excavation damage by workers.
24
15% of oil refinery fire losses are due to delayed operator response.
25
25% of electricity transmission failures involve vegetation management errors.
26
Use of incorrect tools during energy plant maintenance causes 10% of equipment failures.
27
1 in 4 coal mining fatalities is related to the improper use of heavy machinery.
28
20% of thermal power plant trips are caused by human settings in control software.
29
30% of failures in hydraulic fracturing equipment are due to operator over-pressurization.
30
12% of nuclear industry safety events involve poor turnover of information between crews.
Interpretation
Nuclear & Energy Interpretation
While our machines may seem to be at fault, the evidence suggests that the energy sector's single greatest vulnerability is the operator who skipped a step, the technician who guessed, and the universal human capacity for a tragically perfect, preventable mistake.
More related reading
04 · Category
Transport & Aviation30 stats
01
Human error is responsible for approximately 80% of all aviation accidents.
02
Fatigue is a contributing factor in 20% of all road traffic accidents worldwide.
03
94% of motor vehicle crashes are caused by human error or choice.
04
Distracted driving accounts for 8% of all fatal crashes in the United States.
05
Pilot spatial disorientation accounts for 5% to 10% of all general aviation accidents.
06
75% of marine accidents are attributed to human error involving fatigue or stress.
07
Maintenance errors cause roughly 12% of all commercial aircraft accidents.
08
60% of train accidents are linked to human operational errors.
09
Alcohol impairment is involved in 31% of all traffic fatalities in the US.
10
Loss of control in-flight (LOC-I) is the leading cause of fatal aviation accidents, often driven by pilot error.
11
Over 50% of truck accidents are caused by driver fatigue or health issues.
12
13% of large truck crashes involve brake failure due to poor manual adjustment.
13
18% of motorcycle fatalities involve a rider without a valid license, indicating human oversight.
14
10% of serious road accidents are caused by illegal maneuvers.
15
Human error in loading cargo causes 5% of heavy vehicle rollovers.
16
Nearly 60% of runway excursions are caused by pilot decision making under adverse weather.
17
Air Traffic Control errors occur at a rate of 1.5 per 1,000 movements.
18
25% of airline ground damage is caused by vehicle operators neglecting procedures.
19
Technical failures in 15% of bus accidents are traced back to human maintenance mistakes.
20
Lack of situational awareness contributes to 40% of mid-air collision risks.
21
20% of maritime collisions are due to poor radar monitoring by the bridge team.
22
Speeding remains the human factor in 26% of all traffic fatalities.
23
5% of aircraft accidents are caused by pilots flying with unauthorized medications.
24
Airline pilots with less than 500 hours experience are 3x more likely to make stick-and-rudder errors.
25
15% of highway crashes involving pedestrians are the result of driver inattention.
26
Incorrect tire pressure maintenance contributes to 5% of all motor vehicle crashes.
27
40% of general aviation accidents occur during the landing phase due to pilot miscalculation.
28
Weather-related aviation accidents often involve human error in the "go/no-go" decision in 75% of cases.
29
20% of bicycle-car collisions are caused by a driver failing to check blind spots.
30
Over 80% of recreational boating accidents are caused by operator inexperience.
Interpretation
Transport & Aviation Interpretation
The statistics relentlessly prove that while we've engineered incredible vehicles to defy gravity, cross continents, and connect oceans, we have yet to design an infallible human being to operate them.
05 · Category
Workplace & Industrial29 stats
01
70% of offshore oil and gas incidents are caused by human performance factors.
02
Human error accounts for 90% of failures in the manufacturing sector.
03
Slips, trips, and falls due to negligence account for 15% of all accidental deaths in the workplace.
04
50% of industrial equipment damage is caused by operator error.
05
Inadequate training is cited as the primary cause in 35% of industrial accidents.
06
80% of construction site accidents are the result of human behavior and risk-taking.
07
Improper use of Personal Protective Equipment (PPE) contributes to 12% of workplace injuries.
08
25% of workplace errors occur during the transitions between shifts.
09
Poor communication is a factor in 1 out of every 5 industrial mishaps.
10
12% of forklift accidents are caused by inadequate operator training.
11
Manual handling errors account for 30% of all non-fatal workplace injuries.
12
Confined space deaths involve a rescuer error in 60% of cases.
13
40% of scaffolding accidents are caused by improper assembly by workers.
14
22% of industrial fires are sparked by human error during hot work.
15
Stress reduces worker accuracy by 25% in high-stakes industrial environments.
16
18% of factory injuries occur in the last hour of a shift due to lapse in concentration.
17
Poor labeling of hazardous materials leads to 10% of chemical exposure incidents.
18
8% of workplace fatalities involve a failure to lock out/tag out equipment.
19
50% of lab-acquired infections are caused by human breach of safety protocols.
20
Repetitive strain injuries, often self-inflicted by poor ergonomics, cost $20 billion annually.
21
65% of forklift tip-overs are caused by operators taking corners too fast.
22
10% of industrial hand injuries involve workers removing machine guards.
23
25% of office injuries are caused by falls from chairs while reaching for items.
24
50% of warehouse accidents occur in loading bays due to poor coordination.
25
15% of factory workers suffer from hearing loss due to failure to wear ear protection.
26
Incorrect stacking of pallets causes 5% of all storage facility injuries.
27
30% of janitorial injuries involve accidental mixing of incompatible cleaning chemicals.
28
12% of construction fall deaths involve the use of the wrong ladder for the task.
29
Improper manual lifting technique is the cause of 40% of all back strains at work.
Interpretation
Workplace & Industrial Interpretation
We proudly automate factories and engineer fail-safes, yet remain the gloriously predictable, stubbornly error-prone component that still needs a software update and a common-sense patch.
Reference
Cite This Report
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APA
Julian Richter. (2026, February 13). Human Error Statistics. Gitnux. https://gitnux.org/human-error-statistics
MLA
Julian Richter. "Human Error Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/human-error-statistics.
Chicago
Julian Richter. 2026. "Human Error Statistics." Gitnux. https://gitnux.org/human-error-statistics.
Sources & references
89 datasets cited across this report · attribution is report-level