"black hat" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Idiotismes chromatiques en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Locutions nominales en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "word": "black hat SEO"
    }
  ],
  "etymology_texts": [
    "→ voir black et hat, « chapeau noir », probable allusion à la couleur du chapeau traditionnellement attribué aux sorciers maléfiques"
  ],
  "forms": [
    {
      "form": "black hats",
      "ipas": [
        "\\ˈblæk hæts\\"
      ],
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "related": [
    {
      "word": "grey hat"
    },
    {
      "word": "gray hat"
    },
    {
      "word": "white hat"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en anglais de la sécurité informatique",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en anglais",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Black hat."
      ],
      "id": "fr-black_hat-en-noun-vSH5PdCz",
      "raw_tags": [
        "Sécurité informatique"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈblæk hæt\\"
    }
  ],
  "word": "black hat"
}

{
  "categories": [
    "Idiotismes chromatiques en anglais",
    "Locutions nominales en anglais",
    "anglais"
  ],
  "derived": [
    {
      "word": "black hat SEO"
    }
  ],
  "etymology_texts": [
    "→ voir black et hat, « chapeau noir », probable allusion à la couleur du chapeau traditionnellement attribué aux sorciers maléfiques"
  ],
  "forms": [
    {
      "form": "black hats",
      "ipas": [
        "\\ˈblæk hæts\\"
      ],
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "related": [
    {
      "word": "grey hat"
    },
    {
      "word": "gray hat"
    },
    {
      "word": "white hat"
    }
  ],
  "senses": [
    {
      "categories": [
        "Lexique en anglais de la sécurité informatique",
        "Wiktionnaire:Exemples manquants en anglais"
      ],
      "glosses": [
        "Black hat."
      ],
      "raw_tags": [
        "Sécurité informatique"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈblæk hæt\\"
    }
  ],
  "word": "black hat"
}