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Cake day: February 19th, 2025

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  • Almost nothing is ever really done on any filesystem when you press “delete”. The only thing is that those physical parts of the disk with the “deleted” file are marked as “not in use”. The data is there still unchanged, until you save something else and that spot on the disk is the first free spot available for saving that new file.

    So, if you accidentally delete files, make sure that nothing gets saved on that disk anymore, not even by the OS. So, either unmount the disk, or cut the power to your computer, or whatever. Then learn how to mount hard drives as read-only and how to mark the “not in use” spots on your disk as “this spot contains this file”.

    This is why proper deletion of files always includes filling the disk with random data. As long as nothing has been written on top of where the file was (and in reality: still is), it’s still there. Only access to it has been removed, but that access can be regained. Been there, done that.



  • Here’s a list of MasterCard’s toll-free phone numbers in various countries: https://www.mastercard.fi/content/dam/public/mastercardcom/na/global-site/documents/global-services-phone-numbers.pdf

    And here’s the same for Visa: https://www.visa.fi/content/dam/VCOM/download/personal/security/gcas_general_numbers.pdf

    And the content of that file, in case that they might remove that link:

    Mastercard Global Service™

    Local Toll-Free Telephone Numbers

    • American Samoa 1-1-800-307-7309
    • Japan 00531-11-3886
    • Anguilla 1-800-307-7309
    • Korea, Republic of 0079-811-887-0823
    • Antigua and Barbuda 1-800-307-7309
    • Liechtenstein 0800-89-7092
    • Argentina 0800-555-0507
    • Luxembourg 800-2-4533
    • Australia 1800-120-113
    • Malaysia 1-800-804594
    • Austria 0800-07-06-138
    • Mexico 001-800-307-7309
    • Bahamas 1-800-307-7309
    • Monaco 0-800-90-1387
    • Bahrain 8000-0087
    • Montserrat 1-800-307-7309
    • Barbados 1-800-307-7309
    • Netherlands 0800-022-5821
    • Belgium 0800-1-5096
    • New Zealand 800-441-671
    • Bermuda 1-800-307-7309
    • Norway 800-12697
    • Bolivia 800-10-0172
    • Panama 001-800-307-7309
    • Bonaire 001-800-307-7309
    • Peru 0800-77-476
    • Brazil 0800-891-3294
    • Philippines 1-800-1-111-0061
    • Cambodia 800-881-001 then 877-288-3891*
    • Poland 0-0800-111-1211
    • Canada 1-800-307-7309
    • Portugal 800-8-11-272
    • Cayman Islands 1-800-307-7309
    • Puerto Rico 1-800-307-7309
    • Chile 1230-020-2012
    • The Russia 8-800-555-02-69
    • China 10-800-110-7309**
    • Saba 1-800-307-7309
    • China 2 10-800-711-7309***
    • St. Eustatius 1-800-307-7309
    • Colombia 01-800-912-1303
    • St. Maarten 1-800-307-7309
    • Costa Rica 0-800-011-0184
    • St. Kitts-Nevis 1-800-307-7309
    • Curacao 001-800-307-7309
    • Saipan (N. Marianas) 1-800-307-7309
    • Cyprus 080-90569
    • San Marino 800-870-866
    • Czech Republic 800-142-494
    • Saudi Arabia 800-844-9457
    • Denmark 8001-6098
    • Singapore 800-1100-113
    • Dominica 1-800-307-7309
    • South Africa 0800-990418
    • Dominican Republic 1-800-307-7309
    • Spain 900-822-756
    • Finland 08001-156234
    • Sweden 020-791-324
    • France 0-800-90-1387
    • Switzerland 0800-897-092
    • Germany 0800-071-3542
    • Taiwan 00801-10-3400
    • Greece 00-800-11-887-0303
    • Thailand 001-800-11-887-0663
    • Grenada 1-800-307-7309
    • Trinidad and Tobago 1-800-307-7309
    • Guam 1-800-307-7309
    • Turkey 00-800-13-887-0903
    • Guatemala 1-800-999-1480
    • Turks and Caicos 01-800-307-7309
    • Hong Kong 800-966677
    • United Arab Emirates 800-0444-3895
    • Hungary 06800-12517
    • United Kingdom 0800-96-4767
    • India 000-800-100-1087
    • United States 1-800-307-7309
    • Indonesia 001803-1-887-0623
    • Vatican City State 800-870-866
    • Ireland 1-800-55-7378
    • Venezuela 0800-1-002902
    • Israel 180-941-8873
    • Vietnam 120-11576
    • Italy 800-870-866
    • Virgin Islands, 1-800-307-7309
    • Jamaica 0800-307-7309
    • Virgin Islands, U.S. 1-800-307-7309

    Last Updated 31 January 2019

    The contents of the file for Visa’s phone numbers:

    Δ Await second dial tone

    • Anguilla 1-800-847-2911

    • Antigua 1-800-847-2911

    • Argentina 0800-666-0171

    • Aruba 800-1518

    • Australia 1-800-125-440

    • Austria 0 800-200-288Δ800-892-8134

    • Bahamas 1-800-847-2911

    • Bahrain 800-006

    • Barbados 1-800-847-2911

    • Belgium 0800-1-8397

    • Belize 811 or 555Δ800-847-2911

    • Bermuda 1-800-847-2911

    • Bolivia 800-10-0188

    • Bonaire* 001-800-847-2911

    • Brazil 0800-891-3680

    • British Virgin Islands 1-800-847-2911

    • Bulgaria 00-800-0010Δ888-557-4446

    • Cambodia 1-800-881-001Δ888-710-7783

    • Canada 1-800-847-2911

    • Cayman Islands 1-800-847-2911

    • Chile 1230-020-2136

    • Mainland China (South) 10-800-110-2911

    • Mainland China (North) 10-800-711-2911

    • Colombia 01-800-912-5713

    • Costa Rica 0-800-011-0030

    • Croatia 0-800-220-111Δ866-654-0125

    • Curacao* 001-800-847-2911

    • Czech Republic 800-142-121

    • Denmark 80-010277

    • Dominica 1-800-847-2911

    • Dominican Republic 1-800-847-2911

    • Ecuador 1-999-119 or 1-800-225-528Δ800-847-2911

    • Egypt (Cairo only) 2510-0200Δ866-654-0128

    • Egypt (outside Cairo) 02-2510-0200Δ866-654-0128

    • El Salvador 800-6921

    • Estonia 800-12001Δ800-406-9982

    • Finland 0800-11-0057

    • France 0800-90-1179

    • Germany 0800-000-6510

    • Gibraltar 8800-877-3745966

    • Greece 00-800-11-638-0304

    • Grenada 1-800-847-2911

    • Guam 1-800-847-2911

    • Guatemala 1-800-999-0115

    • Guyana 159Δ1-855-477-1390

    • Honduras 800-0123Δ800-847-2911

    • Hong Kong 800-96-7025

    • Hungary 06-800-17682

    • India 000-800-100-1219

    • Indonesia 001-803-1-933-6294

    • Ireland, Republic of 1-800-55-8002

    • Israel 1-80-941-1605

    • Italy 800-819-014

    • Jamaica 0-800-847-2911

    • Japan 00531-11-1555

    • Jordan 1-880-0000Δ888-557-4442

    • Kazakhstan 8 800-121-4321Δ888-557-4447

    • Kenya 866-654-0162

    • Latvia 8000-02288

    • Lebanon 01-426-801Δ866-654-0130

    • Liechtenstein 0800-89-4732

    • Luxembourg 0800-2012

    • Macedonia 0800-94288Δ888-557-4458

    • Malaysia 1800-80-0159

    • Mauritius 01-120Δ866-654-0165

    • Mexico 001-800-847-2911

    • Monaco 0800-90-1179

    • Montserrat 1-800-847-2911

    • Morocco 002-11-0011Δ866-654-0163

    • Netherlands 0800-022-3110

    • Nevis 1-800-847-2911

    • New Zealand 0800-44-3019

    • Norway 800-12052

    • Panama 001-800-111-0016

    • Paraguay 008-11-800Δ800-599-1137

    • Perú 001-800-890-0623

    • Philippines 1-800-1-111-9015

    • Poland 0-0-800-111-1569

    • Portugal 800-8-11-824

    • Puerto Rico 1-800-847-2911

    • Romania 0 808-03-4288Δ888-557-4416

    • Saba* 1-800-847-2911

    • Saint Eustatius* 1-800-847-2911

    • Saint Kitts 1-800-847-2911

    • Saint Lucia 800-238-5517

    • Saint Maarten* 1-800-847-2911

    • San Marino 800-819-014

    • Saudi Arabia 1-800-10Δ866-654-0129

    • Senegal 800-103-072Δ888-557-4451

    • Singapore 800-110-0344

    • Slovakia 0 800-000-101Δ800-406-9970

    • South Africa 0800-990-475

    • South Korea 00798-11-00-908-12

    • Spain 900-99-1124

    • Sweden 020 160 4293

    • Switzerland 0800-89-4732

    • Taiwan 00801-10-3008

    • Thailand 001-800-11-535-0660

    • Trinidad and Tobago 1-800-847-2911

    • Turkey 00-800-13-535-0900

    • Turks and Caicos 0-1-800-847-2911

    • Ukraine 800-502-886Δ888-557-4445

    • United Arab Emirates 8000-021Δ866-654-0112

    • United Kingdom 0800-89-1725

    • United States 1-800-847-2911

    • Uruguay 00-0411-940-7915

    • U.S. Virgin Islands 1-800-847-2911

    • Venezuela 0800-1-002167

    • Vietnam 1 201-0288Δ888-710-7781

    • Updated 1/10/2023