TCSNSETATA CONSULTANCY SERV LT· IT - SoftwareHighNegative
Announced Mon, 10 Aug, 2026 · 16:06 IST

TCS flags employee data exposure threat, says no systems breached

TCS · price

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▲ positive · ▼ negative · ● neutral filings · teal = economic event · numbered = multiple that day (click to pick). Times IST.

Price reactionminutes from the announcement price · days from the prior close
+0.4%Reaction day
₹2425.70
prior close
₹2438.00
announcement price
After-mkt
timing
Nifty 100market-0.4%+0.8% vs market
Computers - Software & Consulting peers, median of 64sector+0.0%+0.4% vs sector

On the reaction day the stock moved 0.8 pts more than Nifty 100 and 0.4 pts more than its Computers - Software & Consulting peers, over the same two closes: a difference in percentage points, not a measure of what the filing did.

Minutes after the announcementfrom the announcement price · no benchmark
Stock
5m
+0.4
10m
+0.3
15m
+0.2
30m
-0.1
Sessions after the filingfrom the prior close
StockMarketvs marketSectorvs sector
Reaction day
+0.4-0.4+0.8+0.0+0.4
Next day
-3.6-0.5-3.1-0.7-2.8
2d
-2.1-0.6-1.5-0.8-1.3
3d
-2.7-0.8-1.9-0.6-2.0
4d
-4.6-1.1-3.6-1.9-2.7
5d
-6.0-1.5-4.5-3.4-2.7
1w
-5.6-1.3-4.3-3.3-2.3
15d
-2.9-2.2-0.7-4.9+2.1
1m
-9.3-4.6-4.7-7.8-1.5
2m
-12.4-8.9-3.4-10.4-1.9
3m
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UpDownMarket · Nifty 100Sector · Computers - Software & Consulting peers, median of 64Pending

Minute windows have no benchmark: there is no intraday index history to compare against.

AI summary

TCS received threat-intelligence alerts about possible exposure of old employee information, over four years old. After investigation, TCS found no credible evidence of a breach of its systems or customer environments. The data was limited to basic employee information, with no customer data or operational systems impacted. Attacker reportedly used password spray and MFA fatigue techniques, which TCS says its safeguards have blocked for over two years.

Likely market impact

No customer data or systems impacted. Limited to old employee info. Minimal financial impact expected.