2025年区块链安全与反洗钱年度报告(英文版)-SlowMist慢雾_第1页
2025年区块链安全与反洗钱年度报告(英文版)-SlowMist慢雾_第2页
2025年区块链安全与反洗钱年度报告(英文版)-SlowMist慢雾_第3页
2025年区块链安全与反洗钱年度报告(英文版)-SlowMist慢雾_第4页
2025年区块链安全与反洗钱年度报告(英文版)-SlowMist慢雾_第5页
已阅读5页,还剩216页未读 继续免费阅读

下载本文档

版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领

文档简介

1

Tableofcontents

I.Introduction3

II.BlockchainSecurityTrends4

2.1OverviewofBlockchainSecurityIncidents4

2.2Top10SecurityIncidentsof20257

2.2.1Bybit7

2.2.2CetusProtocol8

2.2.3BalancerV28

2.2.4Nobitex9

2.2.5Phemex9

2.2.6UPCX10

2.2.7BtcTurk10

2.2.8Infini10

2.2.9CoinDCX11

2.2.10GMX11

2.3ScamTechniques12

2.3.1PhishingAttack12

2.3.2SocialEngineeringAttack22

2.3.3SupplyChainandOpenSourceEcosystemPoisoning31

2.3.4MaliciousBrowserExtensionsandExtensionEcosystemRisks38

2.3.5AttacksUsingAITechnology44

2.3.6PonziSchemeFraud51

III.Anti-MoneyLaunderingTrends58

3.1AMLandRegulatoryDynamics58

3.1.1LEandSanctionsActions58

3.1.2RegulatoryPolicies63

Asia63

2

Europe68

NorthAmerica70

LatinAmerica72

MiddleEast73

Africa73

Oceania74

3.2Freeze/RecoverFundsData75

3.3CybercrimeOrganizationsandtheUndergroundCyberEcosystem78

3.3.1DPRKHackers78

3.3.2Drainer95

3.3.3HuioneGroup103

3.3.4Ransomware/Malware108

3.3.5Privacy/CoinMixingTools114

IV.Conclusion118

V.Disclaimer120

VI.AboutSlowMist121

3

I.Introduction

In2025,theblockchainindustrycontinueditsrapidevolution,withtheinterplayofmacro-financialconditions,regulatoryuncertainties,andintensifiedattacksmakingtheoverallsecuritylandscapesignificantlymorecomplex.Ononehand,hackergroupsandundergroundcybercrimenetworksexhibitedstrongerorganizationandprofessionalization.NorthKorea–linkedhackersremained

highlyactive,withinformation-stealingtrojans,privatekeyhijacking,andsocialengineering

phishingbeingthemainattackvectorsthroughouttheyear.RisksintheDeFiecosystem

continuedtosurface,withMemetokenlaunches,permissionmanagementissues,andothervulnerabilitiesrepeatedlycausingsignificantlosses.TheemergenceofRaaS

(Ransomware-as-a-Service)andMaaS(Malware-as-a-Service)hasloweredtheentrybarrierforattackers,enablingthosewithouttechnicalbackgroundstolaunchattacksquickly.

Meanwhile,undergroundmoneylaunderingsystemscontinuedtomature,withmulti-layeredfundflowsformedbySoutheastAsianscamclusters,privacytools,andmixingservices.Onthe

regulatoryfront,countriesacceleratedtheimplementationofAML/CFTframeworksforcryptoassets.TheU.S.,U.K.,EU,andAsianjurisdictionscarriedoutmultiplecross-borderenforcementoperations.On-chaintracing,intelligencesharing,andassetfreezemechanismsbecamemoreefficient,shiftinginternationalenforcementfromisolatedactionstosystematiccontainment.

Notably,thelegalboundariesofdifferenttypesofprivacyprotocolsarebeingredefined,withregulationgraduallymovingfromblanketsanctionstoamorenuancedapproachthat

distinguishestechnicalcharacteristicsfromcriminaluses.Thelinebetweentechnologicalfreedomandlegalaccountabilityhasbecomeclearerthanever.

Asapioneerinblockchainsecurity,SlowMistcontinuestofocusonthreatintelligence,attackmonitoring,forensictracing,andcompliancesupport,assistinginmultiplecasesofhackerfundtracingandfreezing.Thisreporthighlightskeysecurityincidentsin2025,trendsinAPTgroupactivities,theevolutionofmoneylaunderingmodels,andregulatoryandenforcement

developments.Itaimstoprovideindustrypractitioners,securityresearchers,andcomplianceprofessionalswithtimely,systematic,andinsightfulguidancetoenhancetheirabilitytoidentify,respondto,andanticipaterisks.

4

II.BlockchainSecurityTrends

In2025,theblockchainsectorcontinuedtofaceseveresecuritychallenges.Accordingto

incompletestatisticsfromSlowMistHacked,ablockchainsecurityincidentarchivemaintainedbySlowMist,atotalof200securityincidentsoccurredduringtheyear,resultinginapproximately

$2.935billioninlosses.

Incomparison,2024saw410incidentswitharound$2.013billioninlosses.Whilethenumberofincidentsdeclinedyear-over-year,thetotalamountoflossesincreasedbyapproximately46%.

(Note:Thedatainthisreportisbasedontokenpricesatthetimeofeachincident.Duetopricefluctuations,unreportedcases,andtheexclusionofindividualuserlosses,theactualamountoflossesislikelyhigherthanthefigurespresented.)

(

https://hacked.slowmist.io/

)

2.1OverviewofBlockchainSecurityIncidents

(1)ByEcosystem

●Ethereumremainedthemosttargetedecosystem,withrelatedlossesofapproximately$183.25million;

●Solanarankedsecond,withlossesofaround$17.45million;

●Arbitrumwasthird,withlossesofabout$17.10million.

5

(DistributionandLossesofSecurityIncidentsAcrossEcosystemsin2025)

(2)ByProjectType

●DeFiremainedthemostfrequentlytargetedsectorin2025,withatotalof126securityincidents,accountingforapproximately63%ofallincidentsthatyear,andtotallossesreachingaround$649million.Comparedto2024(339incidents,about$1.029billioninlosses),thisrepresentsayear-over-yeardecreaseofapproximately37%intotallosses.

●Centralizedexchangeplatformsreportedonly22incidents,yettheseresultedina

staggering$1.809billioninlosses.ThemostseverecaseinvolvedanattackonBybit,causingapproximately$1.46billioninlossesfromasingleincident,makingitthemostserioussecurityeventoftheyear.

6

(DistributionandLossesofSecurityIncidentsAcrossDifferentSectorsin2025)

(3)ByAttackVector

●Smartcontractvulnerabilitiesweretheprimarycause,withatotalof56incidents.

●Accountcompromisesrankedsecond,withatotalof50incidents.

(DistributionofCausesforSecurityIncidentsin2025)

7

2.2Top10SecurityIncidentsof2025

(Top10SecurityAttackIncidentswiththeHighestLossesin2025)

2.2.1Bybit

OnFebruary21,2025,on-chaininvestigatorZachXBTdisclosedanabnormallarge-scaleoutflowoffundsfromthe

Bybit

platform.Itwasultimatelyconfirmedthattheincidentresultedinthetheftofmorethan$1.46billionworthofcryptoassets,makingitoneofthelargestcryptocurrency

securityincidentsintermsoflossesinrecentyears.

Followingtheincident,theSlowMistsecurityteampromptlyconductedananalysisbasedonhowtheattackerobtainedSafemultisigpermissionsandthesubsequentlaunderingactivities,

concludingthattheattackerwaslikelylinkedtoaNorthKoreanhackinggroup.Thisassessmentwaslatercorroboratedbyon-chainevidenceprovidedbyZachXBT.

Furtheranalysisrevealedthattheattackerfirstgainedcontroloftheapp.safe.globalfrontend

codeanduseditasanentrypointtocarryoutatargetedattackagainsttheSafe{Wallet}multisigwalletsusedbyBybit.Afterward,SafeandBybitjointlyreleasedasecurityinvestigationreport

confirmingthattheattackoriginatedfromSafe{Wallet}’sAWSinfrastructure(potentiallyinvolving

8

leakedorcompromisedS3/CloudFrontaccountsorAPIkeys),whileBybit’sowninfrastructurewasnotcompromised.

2.2.2CetusProtocol

OnMay22,2025,accordingtocommunityreports,

CetusProtocol

,aliquidityproviderintheSuiecosystem,wassuspectedofsufferinganattack.Liquidityacrossmultiplepoolsdroppedsharply,andpricesofseveraltokentradingpairsontheplatformexperiencedsignificantdeclines.

Preliminaryestimatesputthelossesatover$230million.

Subsequently,theprojectteamannouncedthatapproximately$162millioninassetshadbeenrecoveredthroughavalidator-basedfreezingmechanism.Aftertheincident,theSlowMist

securityteampromptlyintervenedandconfirmedthattherootcauseoftheattackstemmedmainlyfromtwofactors:

First,theCorkmechanismalloweduserstocreatemarketsviatheCorkConfigcontractusinganyassetastheRedemptionAsset(RA),whichenabledtheattackertodesignateDSastheRA.

Second,anyusercouldcallthebeforeSwapfunctionoftheCorkHookcontractwithout

authorizationandpassincustomhookdatatoexecuteCorkCalloperations.Thisallowedtheattackertomanipulatetheprocess,transferringDSfromalegitimatemarkettoanothermarketandusingitastheRA,therebyobtainingthecorrespondingDSandCTtokens.

OnJune8,Cetusannouncedtherelaunchoftheplatform.Usingtherecoveredassets,

approximately$7millioninitsentirecashreserves,anda$30millionUSDCloanfromtheSuiFoundation,theprojectcompensatedaffectedliquiditypools,restoringtheirassetvaluesto85%–99%oftheiroriginallevels.Theremaininglosseswillbecompensatedlinearlyover12monthsthroughCETUStokens.

2.2.3BalancerV2

OnNovember3,2025,theDeFiprotocol

BalancerV2

sufferedavulnerabilityexploitaffecting

ComposableStablePools.Theattackresultedintotallossesof$121.1millionacrossEthereum,Arbitrum,Base,Optimism,andPolygon.

9

Followingtheincident,theSlowMistsecurityteamconductedananalysisandconfirmedthattherootcauselayinanincorrectroundingdirectionwithintheStablePool“exact-out”swappath.Thisflawwasfurtheramplifiedbyprecisionerrorsintroducedbyrateprovidersandextremely

low-liquidityconditions,allowingtheattackertomanipulatethepoolinvariantanddistortBPTpricecalculations,therebyextractinglargeamountsofassetsfromthepoolsatacost

significantlylowerthantheirtruevalue.

OnNovember19,Balancerreleasedapost-incidentanalysisreportstatingthataftertheissue

wasidentified,allpartiescoordinatedrapidlyanddeployedmultiplesecuritymeasures,ultimatelyprotectingorrecoveringapproximately$45.7millioninuserfunds.

2.2.4Nobitex

OnJune18,2025,theIran-basedcryptocurrencyexchange

Nobitex

sufferedahackerattack.

Accordingtotheplatform,theattackerstransferredfundstoburnaddressescontainingslogansagainsttheIranianRevolutionaryGuard,destroyingapproximately$100millionworthofcryptoassets,whichclearlyhadapsychologicalimpact.Apro-Israelhackergroupcallingitself

“GonjeshkeDarande”(meaning“PredatorySparrow”)claimedresponsibilityfortheattackandreleasedtheplatform’ssourcecodeandinternaldatawithin24hours.ThegroupisreportedlyaffiliatedwithIsraelandaccusedNobitexofbeinga“keyregimetoolforfundingterrorismandevadingsanctions.”OnJune29,Nobitextweetedthatitwouldbeginrestoringuserwallet

balancesinphases,startingwithverifiedusers’spotwalletsandgraduallyextendingtootherwallettypes.

2.2.5Phemex

OnJanuary23,2025,thehotwalletsofSingapore-basedcryptocurrencyexchange

Phemex

wereattacked,resultinginapproximately$69.1millioninassetlossesacrossmultiplechainsand

tokens.SeveralblockchainsecurityexpertsbelievetheincidentmaybelinkedtotheNorthKoreanhackergroupTraderTraitor.Followingtheattack,Phemeximplementedriskmitigationmeasures,graduallyrestoringUSDT,USDC,andBTCwithdrawalfunctions,andtooksnapshotsofuser

assetstofacilitatesubsequentcompensationarrangements.ByJanuary26,depositand

withdrawalfunctionsonnetworksincludingArbitrum,Optimism,BSC,Polygon,andBasehadbeenrestored.OnFebruary20,on-chainmonitoringindicatedthattheattackersbegansplitting

10

andtransferringthestolenfunds,withsomeassetsflowingintomixingservicessuchasTornadoCash,suggestingattemptstoanonymizethestolenfunds.

2.2.6UPCX

OnApril1,2025,theofficialaddressofblockchainpaymentplatform

UPCX

wasaccessedwithoutauthorization.Theattackersallegedlygainedadministrativeprivilegesand,byupgradingthe

ProxyAdmincontractandcallingthewithdrawByAdminfunction,transferredatotalof

approximately18.4millionUPC(around$70million)fromthreeadministrativeaccounts.

Followingtheincident,theplatformimmediatelysuspendedUPCdepositsandwithdrawals.OnApril4,UPCXpostedonsocialmediathattheprojectteamstillretainedcontrolofapproximately18,473,290UPCandwouldcontinuethetransferoperationsoftherelevantUPC.

2.2.7BtcTurk

OnAugust14,2025,theTurkishcryptocurrencyexchange

BtcTurk

wasreportedlyattackedagain,resultinginalossofapproximately$54million,involvingmultiplechainsincludingETH,AVAX,

ARB,Base,Optimism,Mantle,andMATIC.On-chaindatashowedthatmostofthestolenassetsflowedintotwoaddresses,suggestingcoordinatedattackactivity,andtheattackershad

convertedallstolenfundsintoETH.BtcTurksubsequentlyacknowledged“unusualactivity”initshotwalletsandsuspendeddepositsandwithdrawalsontheplatformuntiltheinvestigationis

completed.Theexchangestatedthatthemajorityofassetsremainsecurelystoredincold

wallets,thecompany’sfinancesarestable,anduserassetswerenotaffected.Meanwhile,

deposits,withdrawals,andtradinginTurkishliracontinuedasnormal,andthesituationhasbeenreportedtoregulatoryauthorities,withcomprehensivesecuritymeasuresimplemented.

2.2.8Infini

OnFebruary24,2025,thestablecoin-focusedcryptobank

Infini

wasattacked.Theattackers

gainedaccesstoawalletwithadministrativeprivilegesandstolenearly$50millionofcompanyfunds.Infini’sfounder,Christian,tweetedthatnopersonalprivatekeyswerecompromisedand

thattheincidentresultedfromoperationaloversightduringtheprevioushandoverofpermissions.Heconfirmedthatplatformliquidityremainednormalandfullcompensationwaspossible,and

thattheteamwastracingtheflowoffunds.

11

OnFebruary26,Infiniissuedanoperationalupdate,confirmingthatthefundshadbeensecurelystoredinaCoboCustodianwallet,andthatInfiniCardfunctions—includingtransfers,deposits,withdrawals,andpayments—hadbeenfullyrestored.TheteamwasactivelysafeguardingInfiniEarn,withyielddistributionexpectedtobepausedfor3–4weeks.

OnMarch20,Infinisentanon-chainmessagetotheattackers,attachingcourtdocuments

accusingformeremployeeChenShanxuanofstealingapproximately49.5millionUSDCand

requestingfreezingofrelatedassetsanddisclosureoftransactioninformation.OnAugust11,Infinisentanotheron-chainmessagetotheattackers,statingthatifthestolenfundswere

returnedby20:00onAugust13,nofurtherlegalactionwouldbetaken,andtheattackerscouldkeepallprofitsasawhite-hatreward.

2.2.9CoinDCX

OnJuly19,2025,on-chaininvestigatorZachXBTpostedonhispersonalchannelthat“itappearsIndia’scentralizedexchange

CoinDCX

mayhavebeenhackedapproximately17hoursago,

resultinginalossofabout$44.2million,thoughtheincidenthasnotyetbeendisclosedtothe

community.”Shortlythereafter,thecompany’sco-founder,SumitGupta,respondedonX.Inhis

response,Sumitrevealedthatthewalletaffectedbytheattackwasaninternaloperational

accountusedsolelyforprovidingliquidity,andthatcustomerfundswereunaffectedastheywerestoredinsecurecoldwallets.Tradingandwithdrawalswouldresumenormally,andalllosses

fromtheattackwouldbecoveredbyCoinDCX’sreservefunds.

OnJuly31,FinanceFeedsreportedthataCoinDCXsoftwareengineerhadbeenarrestedfor

allegedlyassistingtheattack.Theattackershadinstalledmalwareontheengineer’scomputerunderthepretenseofapart-timejobandpaidahighpart-timesalary.Themalware,a

sophisticatedkeylogger,allowedtheattackerstoobtainlogincredentialsandaccessCoinDCX’sinternalsystems,ultimatelycausingtheincident.

2.2.10GMX

OnJuly9,2025,accordingtomonitoringbySlowMist’sMistEyesecuritysystem,thewell-knowndecentralizedtradingplatform

GMX

sufferedanattack,resultinginalossofoverUSD42millioninassets.AfteranalysisbytheSlowMistsecurityteam,thecoreoftheattackwasthatthe

12

attackerexploitedtwofeatures:theKeepersystemenablingleveragewhenexecutingorders,andthefactthatshortpositionsupdatetheglobalaveragepricewhileclosingashortdoesnot.By

performingareentrancyattack,theattackercreatedlargeshortpositions,manipulatingtheglobalshortaveragepriceandtheglobalshortpositionsize,whichdirectlyinflatedtheGLPpriceand

allowedthemtoredeemprofits.OnJuly19,GMXpostedafollow-uponX.Afternegotiations,theattackerreturnedallstolenfundsandreceivedaUSD5millionbounty.

2.3ScamTechniques

In2025,scamsandintrusiveattackswithintheblockchainecosystemcontinuedtoevolve,

becomingmoredeceptiveandhardertodetect.Traditionalphishinghasgraduallyexpandedintopermissionhijacking,maliciouscodeexecution,andsupply-chainpoisoning.Attacksareno

longerreliantonasinglemethod;instead,theyincreasinglycombinesocialengineering,browserexploitation,newprotocolmechanics,andhybridlurestrategiestoformstealthyanddestructiveattackchains.Belowareseveraltypical,emergingfraudtechniquesthatdeservecloseattentionin2025.

2.3.1PhishingAttack

In2025,phishingremainedoneofthemostactiveriskvectors,evolvingfarbeyondsimplefakewebsitesorcounterfeitauthorizationpages.Attackersincreasinglycombinedsystem-level

commands,walletpermissions,protocolmechanics,andevendevicecontrolintomulti-stage

hybridattacks.Manyschemesnolongeraskdirectlyforseedphrases;instead,theyguidevictimsto“completethetheftstep-by-stepthemselves”,makingtheprocessmoreconcealedandfar

moredamaging.Asaresult,theimpactscopeofphishingattackshasexpandedsignificantly.

(1)ClickfixPhishingAttack

Clickfixphishingattacksareatypicalexampleof“front-endinteractionphishing.”Theircoredoesnotinvolvedirectlytrickingusersintomakingtransfersorgrantingpermissions;instead,theyrelyonhighlyrealisticwebinteractionstocoaxusersintoexecutingmaliciousactionsthemselves.

Attackersoftenmimicsecurityverificationworkflowsfamiliartousers,suchasCAPTCHAchecks,anomalyremediation,orsecurityinspectionpages,makingtheprocessappearindistinguishablefromeverydaywebactivities.

13

Duringanactualattack,whenauserclicksaverificationbuttonorchecksavalidationbox,thephishingsitesilentlywritesmaliciouscommandstothesystemclipboardinthebackgroundandfurtherguidestheuserto“completetheverification”viahotkeysorsystemexecutionwindows.Clearon-screeninstructionstypicallymaketheuserbelievetheyaremerelyperforminga

necessaryverificationstep.Onceexecuted,themaliciouscommandsdownloadandrun

additionalprogramsfromaremoteserver,establishingpersistentmechanismsonthelocalsystem.

14

Analysis

ofrelatedsamplesbySlowMistshowsthatsuchmalwareusuallyhasfull

information-stealingcapabilities,targetingbrowserdata,cryptowalletfiles,privatekeys,seedphrases,passwords,andkeystrokes,withtheabilitytocontinuouslyexfiltratedatatoaremotecontrolserver.

Itisimportanttonotethatthesephishingattacksoftencombinesocialengineering

tactics—trickingusersintoexecutingmaliciouscommands—toachievetheinstallationof

malware.Usersexecutingsuchcommandswithoutsuspicionriskhavingsensitiveinformation(suchaswalletprivatekeys)stolen.

(2)SolanaWalletOwnerPermissionsMayBeAltered

15

Inthistypeofattack,phishingescalatesfromthe“assetlayer”tothe“accountcontrollayer.”Ina

case

SlowMistassistedinanalyzingin2025,thevictimfellforaphishingattackandnoticed

abnormalauthorizationrecordsintheirwallet.Attemptstorevoketheseauthorizationsfailed,andthewallet’sOwnerpermissionshadbeentransferredtotheattacker,directlyresultinginover$3millioninstolenassets,withadditionallargefundstemporarilylockedinDeFiprotocolsand

inaccessible.

Thevictimeventriedinitiatingtransfersfromthecompromisedaccounttotheirownaddresstoverifypermissions,butalltransactionsfailed.Thisscenariocloselyresemblesthe“malicious

multisig”attacksfrequentlyseenintheTRONecosystem.Inotherwords,thisattackwasnotaconventional“authorizationtheft.”Instead,theattackerreplacedthewallet’scorepermission

(Owner),meaningthatevenifthevictimwantedtotransferfunds,revokepermissions,oroperateDeFiassets,theyhadnocontrol.Thefundsremainedvisibleon-chainbutwereentirely

16

uncontrollable.Theattackerssuccessfullytrickedtheuserintosigningtransactionsusingtwo

counterintuitivemechanisms.First,walletstypicallysimulatetransactionexecution,displaying

anychangesinassetsontheinterface;theattackercarefullyconstructedatransactionthat

causednovisiblechangeinfunds.Second,whileEthereumEOAaccountsarecontrolledsolelybyprivatekeys,usersaregenerallyunawarethatSolanaaccountsallowmodificationofaccount

ownership.

WhenawalletcreatesaSolanaaccount,theOwnerisinitiallysettothesystemaccount

(11111111111111111111111111111111),andtransactionsrequireverificationthatsignaturesmatchtheassociatedpublickey.Normally,thisOwnercannotbechangedexternallyvia

commandsorscripts,butitcanbemodifiedthroughasmartcontractcall.Usingtheassign

instruction,theaccount’sOwnercanbechangedfromthecurrentvaluetoanew_owner,andthiscanbeexecutedviaSolanaCLIorclientslikeSolanaWeb3.jsoncetheprogramisdeployed.Inthisphishingevent,attackersexploitedthisfeaturetotrickthevictimintosigningatransactioncontainingtheassigninstruction,silentlytransferringtheOwnerofthevictim’swallet.

Thistypeofattackisextremelystealthy;itsessenceisnot“authorizationmisuse”but“accountownershipreplacement.”Fromtheuser’sperspective,assetsstillappearon-chainbutareentirelyoutoftheircontrol,makingtheriskfarhigherthanintraditionalphishingscenarios.

(3)EIP-7702AuthorizationAbuse

Asaccountabstractionproposalsgraduallyrollout,thenewprotocolcapabilitieshavealso

becomeakeyentrypointforphishingattacks.OnMay24,ausersufferedaphishingattack

relatedtoanEIP-7702authorizationoperation,resultinginalossof$146,551.Theattackwas

orchestratedbythewell-knownphishinggroupInfernoDrainer.Theirmethodexploitednew

featuresoftheEIP-7702contractdelegationmechanism.Specifically,thephishingdidnotinvolveswitchingtheuser’sEOAaddresstothe7702contractaddress.Instead,thedelegatedad

温馨提示

  • 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
  • 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
  • 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
  • 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
  • 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
  • 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
  • 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

评论

0/150

提交评论