2005-04-09-皮尤-Spam_and_Phishing_19页_312kb

Report Analysis Summary

Introduction
This report from the Pew Internet & American Life Project examines user experiences with spam one year after the CAN-SPAM Act was enacted in April 2004. It highlights trends in spam volume, impact on users, and demographic differences based on a nationwide survey of 1,421 internet users conducted in 2005.

Key Statistics

• 52% of internet users consider spam a big problem, but concerns about spam affecting email trust, use, and overall online experience are declining significantly. For instance, 53% say spam reduces trust, down from 62% a year ago; 22% report reduced email use, compared to 29%.
• Overall spam volume has slightly increased, but better filters and user behaviors may explain the modest growth in user inboxes.

Spam Trends

• Pornographic spam has decreased from 71% to 63% reported by users, while "phishing" emails requesting personal financial information rose to 35% of users.
• Spamming techniques have evolved, yet spam profitability persists due to user engagement with unsolicited offers.

Demographic Differences

• Younger users (18–29 years old) are more tolerant of spam and less affected by it, while veteran users (6+ years online) experience higher levels of annoyance and fraud.
• Gender gaps persist: Women initially showed higher sensitivity, but trends suggest convergence over time in most areas.

User Behavior

• No significant changes in user behaviors to combat spam, such as avoiding email sharing or using filters. Awareness of spam rose slightly from 57% to 60%, but no widespread learning curve.
• Approximately 13% of users admitted to being defrauded after responding to spam, indicating spam remains a profitable tool for spammers.

Conclusion
While spam volume is increasing, its negative impact on users is waning as they adapt, making spam tolerable despite its prevalence. However, phishing and other targeted scams continue to pose risks.