"Gutmann method" meaning in English

{
  "etymology_text": "Devised by Peter Gutmann and Colin Plumb.",
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  "lang_code": "en",
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      "glosses": [
        "An algorithm for securely erasing the contents of a hard drive by writing a number of different patterns over the existing data."
      ],
      "id": "en-Gutmann_method-en-name-Cf3XoDsY",
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          "computing",
          "computing#Noun"
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        [
          "algorithm",
          "algorithm"
        ],
        [
          "secure",
          "secure"
        ],
        [
          "erasing",
          "erase"
        ],
        [
          "hard drive",
          "hard drive"
        ],
        [
          "pattern",
          "pattern"
        ]
      ],
      "raw_glosses": [
        "(computing) An algorithm for securely erasing the contents of a hard drive by writing a number of different patterns over the existing data."
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ],
      "wikipedia": [
        "Gutmann method"
      ]
    }
  ],
  "word": "Gutmann method"
}

{
  "etymology_text": "Devised by Peter Gutmann and Colin Plumb.",
  "head_templates": [
    {
      "args": {},
      "expansion": "Gutmann method",
      "name": "en-proper noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
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        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
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        "en:Computing"
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      "glosses": [
        "An algorithm for securely erasing the contents of a hard drive by writing a number of different patterns over the existing data."
      ],
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "algorithm",
          "algorithm"
        ],
        [
          "secure",
          "secure"
        ],
        [
          "erasing",
          "erase"
        ],
        [
          "hard drive",
          "hard drive"
        ],
        [
          "pattern",
          "pattern"
        ]
      ],
      "raw_glosses": [
        "(computing) An algorithm for securely erasing the contents of a hard drive by writing a number of different patterns over the existing data."
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ],
      "wikipedia": [
        "Gutmann method"
      ]
    }
  ],
  "word": "Gutmann method"
}