{"id":80897,"date":"2026-07-30T00:33:19","date_gmt":"2026-07-30T04:33:19","guid":{"rendered":"https:\/\/world.edu\/?p=80897"},"modified":"2026-07-30T00:33:19","modified_gmt":"2026-07-30T04:33:19","slug":"what-really-happens-to-your-data-when-you-click-delete","status":"publish","type":"post","link":"https:\/\/world.edu\/what-really-happens-to-your-data-when-you-click-delete\/","title":{"rendered":"What really happens to your data when you click \u2018delete\u2019?"},"content":{"rendered":"

<\/p>\n

Deletion is a common part of modern life. We send files and folders to the recycle bin all the time, and often get rid of unwanted personal accounts. But do you know what really happens when you hit the \u201cdelete\u201d button?<\/p>\n

The process of deletion is often\u00a0poorly explained<\/a>\u00a0by tech providers. Lack of\u00a0transparency<\/a>\u00a0around how requests are processed, and the absence of clear confirmation that data has been removed, are\u00a0frequently highlighted in research<\/a>.<\/p>\n

These issues are not limited to operating systems. On social media platforms and a wide range of subscription services, deletion mechanisms are often just as unclear. Such misconceptions can have serious implications for the wellbeing of users, exposing them to security and privacy vulnerabilities.<\/p>\n

A further complication is that many users fear losing data, files, photos and videos through accidental deletion \u2013 a condition dubbed\u00a0\u201cdiagraphephobia\u201d<\/a>. Though this is not a recognised pathology,\u00a0studies of digital hoarding behaviour<\/a>\u00a0show that some people get very anxious at the thought of losing or accidentally deleting personal information such as photos and music.<\/p>\n

Such concerns extend the amount of personal data that sits untended but undeleted, ready for potential misappropriation.<\/p>\n

Deletion vs erasure<\/strong><\/h3>\n

A common misconception is\u00a0thinking deletion means erasure<\/a>\u00a0\u2013 the idea that once a deleted item is no longer visible, it has been completely erased with no means of retrieving it. This is largely wrong.<\/p>\n

When users delete files \u2013 moving them to the trash bin, then deleting permanently \u2013 the data isn\u2019t actually erased. Rather, the system marks storage space as reusable and updates metadata to unlink the file. But the underlying content\u00a0often remains recoverable with the right tools<\/a>, especially when data is duplicated across multiple systems or devices.<\/p>\n

More robust forms of deletion include\u00a0physical destruction of the storage medium<\/a>,\u00a0overwriting the memory blocks with new data<\/a>\u00a0to bury the original, or\u00a0encrypting the data and then destroying the key<\/a>.<\/p>\n

However, such methods can be expensive and may render the storage device unusable (for example, when\u00a0overwriting data on magnetic media<\/a>). The\u00a0characteristics of cloud infrastructure<\/a>\u00a0also pose challenges to secure data deletion.<\/p>\n

Similarly, content on public social networks\u00a0may not really be erased after deletion<\/a>\u00a0due to replies, comments and internet archives which can all store the posts in some fashion. The meaning of a deleted tweet can, for example, be recreated based on replies and mentions.<\/p>\n

Zombie accounts<\/strong><\/h3>\n

Another misconception is that deleting an app from a device automatically deletes the associated account. Users often leave\u00a0mobile app accounts<\/a>\u00a0undeleted because they are unaware of their existence, having deleted the related app.<\/p>\n

These are called\u00a0zombie accounts<\/a>\u00a0\u2013 abandoned profiles for a wide array of services, from shopping and storage to dating, finance and streaming. Millions of users possess zombie accounts, with personal data that is\u00a0vulnerable to cyber-attacks and data breaches<\/a>.<\/p>\n

The exponential growth of AI raises a\u00a0further question<\/a>: can data really be deleted once it has been used to train AI models? Machine learning modules easily memorise the data they have been trained on, but \u201cunlearning\u201d is difficult.<\/p>\n

In theory, people in Europe and many other countries around the world have\u00a0a leagal \u201cright to be forgotten\u201d<\/a>. This means they can request the full erasure of any personal data a platform or a company may hold. AI developers are considered data controllers under the EU\u2019s General Data Protection Regulation (GDPR) laws, for example, and are subject to this obligation.<\/p>\n

However, there are no clear guidelines on how erasure should be enforced within AI systems. Regulators may request deletion, but AI companies can argue that\u00a0compliance is infeasible<\/a>\u00a0on account of technical constraints.<\/p>\n

Marvin Ramokapane and Dana Lungu, CC BY-SA<\/p><\/div>\n

Explainable deletion<\/strong><\/h3>\n

To counter the risks posed by incomplete deletion, I believe there is a pressing need for provision of concise, accessible and clear information about how deletion really works.<\/p>\n

One potential approach is \u201cexplainable deletion\u201d \u2013 a protocol developed by\u00a0Marvin Ramokapane<\/a>\u00a0at the UK\u2019s\u00a0National Research Centre on Privacy, Harm Reduction and Adversarial Influence Online<\/a>\u00a0(Rephrain), based at the University of Bristol.<\/p>\n

The intention is to make deletion processes more transparent and understandable without overwhelming the user with too much information in one go.<\/p>\n

Explainable deletion breaks down information into six categories: what, how, when, who, where and why (see diagram). Each offers a user bite-size information about that part of the process.<\/p>\n

Explainable deletion\u2019s six categories:<\/strong><\/p>\n

Explainable deletion is designed to give users control over their actions, the autonomy to choose the deletion type that is right for them, and the assurance that their desired actions have been fulfilled. It may also tackle the anxiety of accidentally losing data by giving options for data recovery.<\/p>\n

While explainable deletion has not yet been adopted in practice, service providers \u2013 both platforms and developers \u2013 could heighten user trust by adopting such protocols. This framework can also be proof of compliance with GDPR regulations and\u00a0the right to be forgotten<\/a>.<\/p>\n

Most of us use systems that collect and store our data on a daily basis. If these systems clearly explained what they store and what deletion really means, it could help us to spot the accounts and data that pose a real risk \u2013 and to take back control of our digital footprints.<\/p>\n

Author Bio:<\/strong> Dana Lungu is a Research Associate, National Research Centre on Privacy, Harm Reduction and Adversarial Influence Online, Rephrain at the University of Bristol<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Deletion is a common part of modern life. We send files and folders to the recycle bin all the time, and often get rid of unwanted personal accounts. But do you know what really happens when you hit the \u201cdelete\u201d button? The process of deletion is often\u00a0poorly explained\u00a0by tech providers. Lack of\u00a0transparency\u00a0around how requests are […]\n… learn more→<\/a><\/p>","protected":false},"author":33,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[71506],"tags":[10629],"coauthors":[11733],"class_list":["post-80897","post","type-post","status-publish","format-standard","hentry","category-tech","tag-data"],"acf":[],"yoast_head":"\nWhat really happens to your data when you click \u2018delete\u2019? - World leading higher education information and services<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/world.edu\/what-really-happens-to-your-data-when-you-click-delete\/\" class=\"yoast-seo-meta-tag\" \/>\n<meta property=\"og:locale\" content=\"en_US\" class=\"yoast-seo-meta-tag\" \/>\n<meta property=\"og:type\" content=\"article\" class=\"yoast-seo-meta-tag\" \/>\n<meta property=\"og:title\" content=\"What really happens to your data when you click \u2018delete\u2019? - World leading higher education information and services\" class=\"yoast-seo-meta-tag\" \/>\n<meta property=\"og:description\" content=\"Deletion is a common part of modern life. 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