<record>
  <controlfield tag="001">284</controlfield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">Sybil attack</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">Online Social Networks</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">Graph-based Sybil Detection</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">Graph Theory</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">Community Detection</subfield>
  </datafield>
</record>