Legall proltectioln folr colnsumers in olnline buying alnd selling tralnsalctiolns is very impolrtalnt folr develolping the colmmunity's ecolnolmy. The increalsingly widespreald pralctice olf olnline tralding tralnsalctiolns (E-colmmerce) in Indolnesial malkes it ealsier folr peolple whol walnt tol sholp folr gololds alnd services needed, but there alre malny viollaltiolns olf colnsumer rights thalt olpen up olppolrtunities folr fralud frolm business alctolrs olr third palrties regalrding persolnall daltal security. gualralnteed by the olwner olf the olnline sholp sol thalt it hals implicaltiolns folr colnsumer proltectioln. Olnline buying alnd selling tralnsalctiolns alre balsicallly the salme als colnventiolnall buying alnd selling, the difference is the medial used. The purpolse olf this study is tol find olut the proltectioln folr users olf olnline buying alnd selling services (E-colmmerce) regalrding the colnfidentiallity olf persolnall daltal alnd holw sholp olwners resollve disputes relalted tol colnsumer lolsses. The nolrmaltive legall resealrch methold is used als al writing methold which olriginaltes frolm lalws alnd regulaltiolns alnd libralry malterialls. The results olf this study indicalte thalt colnsumer proltectioln in buying alnd selling olnline using e-colmmerce is nolt clealr becaluse proltectioln folr colnsumers folr lolsses received due tol irrespolnsibility olf E-Colmmerce business alctolrs in palying olff tralnsalctiolns hals nolt been clealrly regulalted in the Colnsumer Proltectioln Alct (UUPK). ). Holwever, business alctolrs whol caln be colntalcted caln be held respolnsible folr colmpensaltioln. In Indolnesial, there alre twol legall remedies thalt colnsumers caln talke if they suffer al lolss in aln olnline tralding tralnsalctioln, nalmely by waly olf al lalwsuit olr externall clalim (colnsultaltioln, negoltialtioln, medialtioln, olr expert judgment) alccolrding tol the algreement olf ealch palrty.