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The Steamship Authority

The Steamship Authority Vendor Cyber Rating & Cyber Score

steamshipauthority.com

Our mission is to operate a safe, efficient, and reliable transportation system for the islands of Martha's Vineyard and Nantucket with a commitment to sustainability, accessibility, our port communities, and public engagement. The Steamship Authority is the largest ferry service to the Islands of Martha’s Vineyard and Nantucket from Cape Cod, serving over 3 million passengers each year. We offer the lowest fares and the most frequent daily departures for passengers, automobiles, groups and trucks. Martha’s Vineyard ferries depart from Woods Hole and Nantucket ferries depart from Hyannis. Our seasonal high-speed passenger ferry, the M/V Iyanough, gets you to Nantucket, dock-to-dock, in just an hour. Since 1960, we have been the


SA A.I CyberSecurity Scoring

SA
Company Information
Website:https://www.steamshipauthority.com
Employees number:146
Number of followers:1,481
NAICS:47
Industry Type:Transportation, Logistics, Supply Chain and Storage
Homepage:steamshipauthority.com
SA Risk Score (AI oriented)
Between 700 and 749
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SATransportation, Logistics, Supply Chain and Storage
Updated:
02/04/2026
724/1000
Moderate
Ba
AaaAaABaaBaBCaaCaC
Powered by our proprietary A.I cyber incident model
Insurance prefers TPRM score to calculate premium
SA Global Score (TPRM)
xxxx
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SATransportation, Logistics, Supply Chain and Storage
•••
Score locked
Instant access to detailed risk factors
Vulnerabilities
Benchmark vs. industry & size peers
Findings

SAModerate
Current Score
724Ba (MODERATE)
01000
1 incidents
0 avg impact
Incident timeline with MITRE ATT&CK tactics, techniques, and mitigations.
SEPTEMBER 2026
727Before Incident
AUGUST 2026
726Before Incident
JULY 2026
726Before Incident
JUNE 2026
726Before Incident
MAY 2026
725Before Incident
APRIL 2026
724Before Incident
MARCH 2026
724Before Incident
FEBRUARY 2026
723Before Incident
JANUARY 2026
723Before Incident
DECEMBER 2025
722Before Incident
NOVEMBER 2025
721Before Incident
OCTOBER 2025
721Before Incident
JUNE 2021
751Before Incident
Ransomware
01 Jun 2021SA
The Woods Hole, Martha’s Vineyard and Nantucket Steamship Authority

Ransomware Attack on The Steamship Authority

659After Incident
CRITICAL-92
STE319092125
In June 2021, The Steamship Authority suffered a ransomware attack that encrypted critical network files, rendering systems inoperable. The attack disrupted core operations, including the inability to process or modify reservations (vehicle, passenger, or ticketing) both online and via phone. Customers faced significant delays, and transactions were limited to cash due to compromised credit card systems. While vessel safety remained unaffected—radar and GPS functions stayed operational—the operational paralysis caused financial strain, reputational damage, and logistical chaos. The attack forced reliance on manual processes, severely degrading service efficiency and customer trust. No explicit mention of data exfiltration was reported, but the systemic outage directly threatened the organization’s revenue streams and public perception.
INCIDENT DETAILS -
TYPE
ransomware
IMPACT
reservation systemsticketing systemsonline booking systemsphone booking systemscredit card payment systemsinability to change/book reservationsdelays during ticketingunable to process online/phone vehicle reservationspreference for cash transactions due to limited credit card system availability

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The Steamship Authority Cyber Scoring History | Rankiteo