kth.sePublications KTH
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Finding anomalies in software licensing logs using unsupervised methods
KTH, School of Electrical Engineering and Computer Science (EECS).
2020 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Detektering av anomalier i mjukvarulicensieringsloggar med oövervakadde metoder (Swedish)
Abstract [en]

Cryptolens is world leading software licensing platform. As a result, it has large amounts of data that is generated when each end user application at- tempts to verify a license key. Being able to differentiate between normal and anomalous data can provide software vendors with a way to detect fraud and other abnormal behaviour, allowing them to save time on analyzing all the data themselves and increase revenues. It is found that an effective way to find anomalies in software licensing logs is to use the reconstruction error as the anomaly score from either an LSTM or TCN based autoencoder, where the decision boundary is decided by the largest error in the error histogram on the training set.

Abstract [sv]

Cryptolens är en världsledande mjukvarulicensieringslösning. Tack vare detta har den stor tillgång till data som är genererad när varje slutanvändare försöker verifiera en licens. Att kunna särskilja mellan normal och anomalisk data ger mjukvaruföretag ett sätt att detektera bedrägerier och annan typ av avvikande användning, som tillåter dem att spara tid på att analysera data:n själva och öka sina intäkter. Det konstateras att ett effektivt sätt att hitta anomalier i mjukvarulicensieringsloggar är genom att använda antingen en autoencoder som bygger på LSTM eller TCN, där beslutsgränsen sätts med hjälp av det största felet i histogrammet som är skapat från träningsdatan.

Place, publisher, year, edition, pages
2020. , p. 48
Series
TRITA-EECS-EX ; 2020:223
National Category
Computer and Information Sciences
Identifiers
URN: urn:nbn:se:kth:diva-277952OAI: oai:DiVA.org:kth-277952DiVA, id: diva2:1451278
External cooperation
Cryptolens AB
Educational program
Master of Science - Machine Learning
Supervisors
Examiners
Available from: 2020-08-13 Created: 2020-07-02 Last updated: 2022-06-26Bibliographically approved

Open Access in DiVA

fulltext(1045 kB)697 downloads
File information
File name FULLTEXT01.pdfFile size 1045 kBChecksum SHA-512
3996502a8f78355aba36edb88331ce2db9a15511f6e9896d0b8af0cf19bb4507280b16ffeade45358b676b2d47cc028f9af222474a4cd500fe418c6a2373e4e3
Type fulltextMimetype application/pdf

By organisation
School of Electrical Engineering and Computer Science (EECS)
Computer and Information Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 701 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 1126 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf