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 - **2FA Feature Security Testing** -> https://xmind.works/share/ph6inJpw?xid=HPdwd04O
 - **Registration Feature Security Testing** -> https://xmind.works/share/6ZrhpTgT?xid=JCZJS2jB
 - **Numeric System Base Conversion** -> https://xmind.works/share/PuaGf35z?xid=EtqPgoBd
+- **GraphQL Security Testing Mind Map** ->https://xmind.works/share/gQBGfaVW?xid=3sZyctz5
+- **Signal Analysis** -> https://xmind.works/share/SGoeS9qY?xid=RhnE4tME -> https://xmind.works/share/kBjomnX3?xid=UAiKOmdd
+- **Power Electronics Components** -> https://xmind.works/share/VjWwWOPM?xid=CVvW50Aw
+
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