The Global List of Digitally Endangered Species – The Bit List – offers an accessible snapshot of the concerns expressed by the global digital preservation community with respect to the risks faced by diverse types of digital content in varied conditions and contexts. It provides an elementary assessment of the imminence and significance of the dangers faced by different, and at times overlapping classifications of digital materials. By identifying the urgency of action and significance of content, The Bit List draws attention to those digital materials that, in the view of the global digital preservation community, require urgent action to remain viable.
Access the full Bit List List Report for 2021
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Watch the Introduction to the Bit List of Digitally Endangered Species 2021
Click on each of the risk classifications to see the entries for each category, browse the Bit List by digital species or click each entry for the full report:
Risk Classifications
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LOWER RISK
Digital materials are listed as Lower Risk when it does not meet the requirements for other categories but where there is a distinct preservation requirement. Failure or removal of the preservation function would result in re-classification to one of the threatened categories.
There are no entries classified as Lower Risk in this edition of the BitList.
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VULNERABLE
Digital materials are listed as Vulnerable when the technical challenges to preservation are modest but responsibility for care is poorly understood, or where the responsible agencies are not meeting preservation needs. This classification includes Lower Risk materials in the presence of aggravating conditions.
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ENDANGERED
Digital materials are listed Endangered when they face material technical challenges to preservation or responsibility for care is poorly understood, or where the responsible agencies are poorly equipped to meet preservation needs. This classification includes Vulnerable materials in the presence of aggravating conditions.
3D Digital Engineering Drawings
Born Digital Photographs and Video shared via Social Media or Uploaded to Cloud Services
Cloud-based Services and Communications Platforms
Completed investigations based on open source intelligence sources
Content on cloud video services produced by the service provider
Contractual Documents and Related Records
Corporate Records of Long Duration on Network Drives,
Intranets and EDRMSCurrent Portable Magnetic Media
Current Portable Optical Media
Current Portable Solid-State Media
Digital music and ephemera shared on social media
Digital recordings published via cloud-based music sharing platforms
Digitally published sheet music
Electronic hospital and medical records
Master Digital Music and Sound Recordings
Pre-Production TV and Movie Materials
Published research data appended to journal articles
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CRITICALLY
ENDANGERED
Digital materials are listed Critically Endangered when they face material technical challenges to preservation, there are no agencies responsible for them or those agencies are unwilling or unable to meet preservation needs. This classification includes Endangered materials in the presence of aggravating conditions.
Community generated content in arts and heritage
Consumer social media free at the point of use
Correspondence and records of research
Data posted to defunct or little-used social media platforms
Digital Archives from Public Enquiries and Commissions
Digital archives of community groups
Digital Archives of music production
Digital Evidence and records of investigation prior to court
Legacy research web collections
Massively Multiple Online Gaming Platforms and Experiences
Media Art by deceased artists or defunct workshops
Non-current Hard Disk Technologies
Non-current Portable Magnetic Media
Non-current Portable Optical Media
Non-current Portable Solid State Media
Old or non-current offline video games
Old or non-current video games
Open source intelligence sources of current conflicts
Pre-WWW ViewData and Teletext Services where no Archival Agency has Captured and Retained the Signal
Records of Non-Governmental Agencies
Records of Quasi Non-Governmental Agencies
Supporting Digital Materials for Museums and Galleries
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PRACTICALLY
EXTINCT
Digital materials are listed as Practically Extinct when the few known examples are inaccessible by most practical means and methods. This classification includes Critically Endangered materials in the presence of aggravating conditions.
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CONCERN
Digital materials are listed as of Concern when an active member of the digital preservation community has expressed a legitimate concern but the concern has not yet been assessed by the BitList jury. They will be assessed for inclusion in the subsequent year.
There are no entries classified as Of Concern in this edition of the BitList.
Digital Species
Species Categories
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Nominate at-risk digital materials now!
The Bit List remains open for nominations year round
NOMINATE AT-RISK DIGITAL MATERIALS
If you are unable to access the Google form to nominate your at-risk digital materials or you would like to prepare your information in advance,
please download and complete the Excel version of the form.
Completed Excel forms may be sent to Sarah Middleton.
Access older versions of the Bit List, now superceded