Cited by 382Spam and Phishing DetectionMisinformation and Its ImpactsHate Speech and Cyberbullying Detection

The DOI matches its Crossref record; 48 of the 50 references it cites were found in a registry or an index; none of the 17 sources its claims cite is checked for support yet.

The Paradigm-Shift of Social Spambots: Evidence, Theories, and Tools for the Arms Race

Open access
Cresci, Stefano, Di Pietro, Roberto, Petrocchi, Marinella, Spognardi, Angelo, Tesconi, Maurizio·2017·Proceedings of the 26th International Conference on World Wide Web Companion - WWW '17 Companion

Abstract

Recent studies in social media spam and automation provide anecdotal argumentation of the rise of a new generation of spambots, so-called social spambots. Here, for the first time, we extensively study this novel phenomenon on Twitter and we provide quantitative evidence that a paradigm-shift exists in spambot design. First, we measure current Twitter's capabilities of detecting the new social spambots. Later, we assess the human performance in discriminating between genuine accounts, social spambots, and traditional spambots. Then, we benchmark several state-of-the-art techniques proposed by the academic literature. Results show that neither Twitter, nor humans, nor cutting-edge applications are currently capable of accurately detecting the new social spambots. Our results call for new approaches capable of turning the tide in the fight against this raising phenomenon. We conclude by reviewing the latest literature on spambots detection and we highlight an emerging common research trend based on the analysis of collective behaviors. Insights derived from both our extensive experimental campaign and survey shed light on the most promising directions of research and lay the foundations for the arms race against the novel social spambots. Finally, to foster research on this novel phenomenon, we make publicly available to the scientific community all the datasets used in this study.

Overview

AI snapshot

Written from the paper’s full text.

TL;DR

The paper provides quantitative evidence that a new generation of Twitter “social spambots” mimics genuine users closely enough to evade Twitter, human annotators, and several state-of-the-art detection tools. It argues for a paradigm shift toward group-level/collective-behavior detection and releases annotated datasets.

Key findings

  • Twitter’s own suspensions barely affect social spambots: survival rates were 95.2%, 96.1%, and 99.6% for social spambots #1–#3, close to genuine accounts at 96.5%; by contrast, traditional spambots #2 were 1.0% alive / 99.0% suspended, and fake followers were 25.4% alive / 73.5% suspended.
  • Human annotators failed on social spambots: accuracy 0.2355 with 1,065 false negatives, versus 0.9136 on traditional spambots and 0.9201 on genuine accounts; Fleiss’ kappa was 0.186 for social spambots, 0.007 for traditional spambots, and 0.410 for genuine accounts.
  • Established detection tools also failed: BotOrNot? achieved F-Measure 0.288 and MCC 0.174 on test set #1; Yang et al. achieved F-Measure 0.261 and MCC 0.043; Miller et al. performed worst.
  • Group-level approaches performed much better: Ahmed et al. modified with fastgreedy community detection reached MCC 0.886 on test set #1 and 0.847 on test set #2; Cresci et al.’s digital DNA reached MCC 0.952 and 0.867, respectively.

Methods

  • The study used Twitter datasets: 3,474 genuine accounts / 8,377,522 tweets; social spambots #1 (991 accounts / 1,610,176 tweets), #2 (3,457 / 428,542), #3 (464 / 1,418,626); traditional spambots #1–#4; fake followers (3,351 / 196,027); and two mixed test sets of 1,982 and 928 accounts.
  • Twitter monitoring used API error codes 63 (suspended) and 50 (deleted) to measure account survival. Crowdsourcing used CrowdFlower with 4,428 accounts, at least 3 contributors per account, 247 trusted contributors from 42 countries, 13,284 answers, majority voting, and a 70% test-question accuracy threshold.
  • The authors reproduced and benchmarked BotOrNot?, Yang et al.’s supervised classifier, Miller et al.’s stream clustering, Ahmed et al.’s graph clustering (modified with fastgreedy), and Cresci et al.’s digital DNA, evaluating precision, recall, specificity, accuracy, F-Measure, and MCC on the test sets.

Limitations

  • Stated: BotOrNot?’s authors note its performance against evolved spambots may be worse than originally reported; Viswanath et al.’s technique cannot directly spot individual tampering accounts; and Table 7 is explicitly not complete but illustrative of an emerging trend.
  • Stated/evident: 142 accounts (3.2%) were deleted, suspended, or protected during the crowdsourcing campaign, leaving 4,286 instead of 4,428; contributors were tech-savvy Twitter users and filtered by >70% test accuracy, so human-performance results may not generalize to all users.
  • Evident: the datasets come from specific Twitter campaigns and years and rely on manual annotation; the social-spambot ground truth used group comparison, and the paper does not establish performance on other platforms or future spambot generations.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1145/3041021.3055135

Cites

48 of 48 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Verification

Claims the paper makes

39 Own result · 21 Own interpretation · 16 Not checked yet · 10 No basis given · 5 Own method

Verify all 17 references — free account

Show all 60 claims

  • Probably not a substantial claim. 13
  • It may state two separate claims as one. 21
31 of 31
  • The paper relies on this without support.

    Twitter's API error codes 63 and 50 accurately indicate that an account has been suspended by Twitter or deleted by its original owner, respectively.

    “API queries to a suspended account result in Twitter responding with the error code 63. API queries to accounts that have been deleted by their original owner result in Twitter responding with the error code 50.”
  • The paper relies on this without support.

    The internal manual verification correctly certifies the automated nature of the accounts.

    “All the accounts collected in this process have then undergone an internal manual verification phase to certify their automated nature.”
  • The paper relies on this without support.

    The genuine accounts that answered the crowdsensing question are human-operated.

    “All the replies to our questions were manually verified and all the 3,474 accounts that answered were certified as humans.”
  • The paper relies on this without support.

    The level of agreement measured by Fleiss' kappa can be interpreted as a proxy for the difficulty of a task.

    “The level of agreement can be also interpreted as a proxy for the difficulty of a task.”
  • The paper relies on this without support.

    Social spambots have a common goal, such as increasing someone's reputation score.

    “since they do have a common goal (e.g., increasing someone's reputation score).”
5 of 5

Claims other papers make about this one

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Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

5 of 5

Citations

Cites

Show all 50 references

Research works printed but not linked: 1

  1. M. Jiang, P. Cui, A. Beutel, C. Faloutsos, and S. Yang. Catching synchronized behaviors in large networks: A graph mining approach. ACM Trans. Knowl. Discov. Data, 10(4):35:1--35:27, 2016.

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Metadata

Authors
Cresci, S., Di Pietro, R., Petrocchi, M., Spognardi, A., & Tesconi, M.
Affiliations
  • University of Pisa (IT)
  • Nokia Bell Labs & University of Padua, Paris, France
  • National Research Council (IT)
  • Technical University of Denmark (DK)
Venue
Proceedings of the 26th International Conference on World Wide Web Companion - WWW '17 Companion
Publisher
ACM Press
Published
2017
Pages
963-972
OpenAlex
W4289253852
Cited by
381
References
50
Citations by year
2026: 31 · 2025: 42 · 2024: 48 · 2023: 48 · 2022: 48 · 2021: 46 · 2020: 62 · 2019: 37 · 2018: 15 · 2017: 4
FWCI
24.78
Type
conference paper
Language
en
Open access
Locations
  • International World Wide Web Conference (WWW) (publishedVersion, cc-by)
  • arXiv (Cornell University) (submittedVersion)
  • CINECA IRIS Institutial research information system (University of Pisa) (submittedVersion)
  • IRIS Research product catalog (Sapienza University of Rome) (submittedVersion)
Funders
  • EU (654024, 675320)
  • Regione Toscana (SmartNews: Social sensing for Breaking News)
Topics
  • Physical Sciences › Computer Science › Information Systems › Spam and Phishing Detection
  • Social Sciences › Sociology and Political Science › Misinformation and Its Impacts
  • Physical Sciences › Computer Science › Artificial Intelligence › Hate Speech and Cyberbullying Detection
Keywords
Twitter, spam social media

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