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[SITUATION] · [QUIET] · [TECHNOLOGY]
2 clusters · 4 sources · 2 days · First seen · Last updated
Rise in automated spam and caller ID spoofing
Overview
Automated calling systems and spoofing techniques are driving an increase in spam, silent, and dropped calls across Europe.
In Spain, scammers have utilized “CLI spoofing” to manipulate caller ID displays, often making calls appear local to increase answer rates. While regulations have tightened, the issue has transitioned from fake local numbers to calls originating from foreign countries. Technical challenges remain because traditional telephony protocols lack widespread cryptographic verification to confirm caller identity.
In Germany and Switzerland, the use of predictive dialers has led to a rise in silent and dropped calls. These systems dial more numbers than there are available agents, resulting in calls that either remain silent or terminate abruptly. Authorities warn that these interactions may be used to verify active phone lines, potentially leading to increased phishing, unwanted advertising, or the sale of contact information on the black market.
Entities
Timeline
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18 days ago
[TECHNOLOGY] 2 sourcesPredictive dialers drive increase in silent and dropped callsAutomated predictive dialers are causing an increase in silent and dropped calls, which scammers use to verify active numbers for future phishing and telemarketing attempts.
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20 days ago
[TECHNOLOGY] 2 sourcesSpam and silent calls rise through caller ID spoofingSpam and silent calls are rising due to automated dialing and CLI spoofing, a technique that manipulates caller ID to mimic local numbers, making it difficult for operators to filter effectively.
Sources
aztecajalisco.com · suedostschweiz.ch · teltarif.de · xatakamovil.com