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Document and Entity Information - shares
 6 Months Ended
Jun. 30, 2023
Aug. 10, 2023
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2023  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2023  
Document Fiscal Period Focus Q2  
Document Transition Report false  
Entity File Number 001-33852  
Entity Registrant Name VirnetX Holding Corp  
Entity Central Index Key 0001082324  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 77-0390628  
Entity Address, Address Line One 308 Dorla Court  
Entity Address, Address Line Two Suite 206  
Entity Address, City or Town Zephyr Cove  
Entity Address, State or Province NV  
Entity Address, Postal Zip Code 89448  
City Area Code 775  
Local Phone Number 548-1785  
Title of 12(b) Security Common Stock, par value $0.0001 per share  
Trading Symbol VHC  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   71,639,905