Secure　localization　has　become　a　serious　issue　along　with　increasing　security　threats　in　wireless　sensor　networks　(WSNs).　In　this　paper,　we　address　the　problem　of　making　sensors　in　WSNs　to　locate　their　positions　in　an　environment　in　which　there　exists　the　threat　of　wormhole　attacks.　We　propose　a　secure　localization　scheme　based　on　DV-Hop　algorithm,　named　secure　DV-Hop　localization　scheme　(SDVL),　which　can　fight　against　wormhole　attacks　in　wireless　sensors　networks　without　increasing　hardware　complexity　or　too　much　computational　cost.　In　SDVL,　sensors　ensure　the　security　of　their　localization　by　using　an　effective　detection　mechanism.　Simulation　results　show　that　the　proposed　scheme　is　capable　of　fighting　against　wormhole　attacks　while　improving　accuracy　compared　to　the　basic　DV-Hop　algorithm.　©　2012　Springer-Verlag　Berlin　Heidelberg.